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1312230400100 = 225219690647579
BaseRepresentation
bin10011000110000111000…
…001101110000001100100
311122110002121000011002122
4103012013001232001210
5132444421440300400
62442455203325112
7163543202235464
oct23060701560144
94573077004078
101312230400100
1146657193a874
1219239b380798
1396986bcb389
1447725a1dba4
1524202a07685
hex1318706e064

1312230400100 has 36 divisors (see below), whose sum is σ = 2997410497200. Its totient is φ = 497266256160.

The previous prime is 1312230400049. The next prime is 1312230400123. The reversal of 1312230400100 is 10040322131.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345321890 + ... + 345325689.

It is an arithmetic number, because the mean of its divisors is an integer number (83261402700).

Almost surely, 21312230400100 is an apocalyptic number.

1312230400100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312230400100 is an abundant number, since it is smaller than the sum of its proper divisors (1685180097100).

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

1312230400100 is a wasteful number, since it uses less digits than its factorization.

1312230400100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690647612 (or 690647605 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1312230400100 its reverse (10040322131), we get a palindrome (1322270722231).

The spelling of 1312230400100 in words is "one trillion, three hundred twelve billion, two hundred thirty million, four hundred thousand, one hundred".

Divisors: 1 2 4 5 10 19 20 25 38 50 76 95 100 190 380 475 950 1900 690647579 1381295158 2762590316 3453237895 6906475790 13122304001 13812951580 17266189475 26244608002 34532378950 52489216004 65611520005 69064757900 131223040010 262446080020 328057600025 656115200050 1312230400100