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1312113223300 = 2252111962780537
BaseRepresentation
bin10011000110000000000…
…010101110011010000100
311122102210102111221202011
4103012000002232122010
5132444201441121200
62442435420024004
7163540250243245
oct23060002563204
94572712457664
101312113223300
11466511787140
12192368092004
13969688524a9
144771423accc
15241e75ad5ba
hex131800ae684

1312113223300 has 72 divisors (see below), whose sum is σ = 3269610419040. Its totient is φ = 452019859200.

The previous prime is 1312113223229. The next prime is 1312113223339. The reversal of 1312113223300 is 33223112131.

It is a super-2 number, since 2×13121132233002 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31369369 + ... + 31411168.

It is an arithmetic number, because the mean of its divisors is an integer number (45411255820).

Almost surely, 21312113223300 is an apocalyptic number.

1312113223300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312113223300 is an abundant number, since it is smaller than the sum of its proper divisors (1957497195740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312113223300 is a wasteful number, since it uses less digits than its factorization.

1312113223300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62780581 (or 62780574 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1312113223300 its reverse (33223112131), we get a palindrome (1345336335431).

The spelling of 1312113223300 in words is "one trillion, three hundred twelve billion, one hundred thirteen million, two hundred twenty-three thousand, three hundred".

Divisors: 1 2 4 5 10 11 19 20 22 25 38 44 50 55 76 95 100 110 190 209 220 275 380 418 475 550 836 950 1045 1100 1900 2090 4180 5225 10450 20900 62780537 125561074 251122148 313902685 627805370 690585907 1192830203 1255610740 1381171814 1569513425 2385660406 2762343628 3139026850 3452929535 4771320812 5964151015 6278053700 6905859070 11928302030 13121132233 13811718140 17264647675 23856604060 26242264466 29820755075 34529295350 52484528932 59641510150 65605661165 69058590700 119283020300 131211322330 262422644660 328028305825 656056611650 1312113223300