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1312230310 = 25314233001
BaseRepresentation
bin100111000110111…
…0000101110100110
310101110012012120121
41032031300232212
510141412332220
6334113352154
744342526226
oct11615605646
93343165517
101312230310
116137a1066
1230756865a
1317bb2aa51
14c63c6086
157a308eaa
hex4e370ba6

1312230310 has 16 divisors (see below), whose sum is σ = 2438209152. Its totient is φ = 507960000.

The previous prime is 1312230301. The next prime is 1312230313. The reversal of 1312230310 is 130322131.

It is a super-2 number, since 2×13122303102 = 3443896772965392200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312230313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2116191 + ... + 2116810.

It is an arithmetic number, because the mean of its divisors is an integer number (152388072).

Almost surely, 21312230310 is an apocalyptic number.

1312230310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312230310 is a deficient number, since it is larger than the sum of its proper divisors (1125978842).

1312230310 is a wasteful number, since it uses less digits than its factorization.

1312230310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233039.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1312230310 is about 36224.7195986387. The cubic root of 1312230310 is about 1094.8047885641.

Adding to 1312230310 its reverse (130322131), we get a palindrome (1442552441).

The spelling of 1312230310 in words is "one billion, three hundred twelve million, two hundred thirty thousand, three hundred ten".

Divisors: 1 2 5 10 31 62 155 310 4233001 8466002 21165005 42330010 131223031 262446062 656115155 1312230310