1312323600 has 120 divisors (see below), whose sum is σ = 4804384960. Its totient is φ = 299957760.

The previous prime is 1312323587. The next prime is 1312323637. The reversal of 1312323600 is 63232131.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×1312323600² = 3444386462233920000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 69715 + ... + 86514.

Almost surely, 2^1312323600 is an apocalyptic number.

1312323600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312323600 is an abundant number, since it is smaller than the sum of its proper divisors (3492061360).

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

1312323600 is a wasteful number, since it uses less digits than its factorization.

1312323600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156257 (or 156246 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1312323600 is about 36226.0072323738. The cubic root of 1312323600 is about 1094.8307321600.

Adding to 1312323600 its reverse (63232131), we get a palindrome (1375555731).

The spelling of 1312323600 in words is "one billion, three hundred twelve million, three hundred twenty-three thousand, six hundred".