1312485672 has 32 divisors (see below), whose sum is σ = 3286728000. Its totient is φ = 436760064.

The previous prime is 1312485661. The next prime is 1312485673. The reversal of 1312485672 is 2765842131.

It is a self number, because there is not a number n which added to its sum of digits gives 1312485672.

It is not an unprimeable number, because it can be changed into a prime (1312485673) 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, 31273 + ... + 60024.

It is an arithmetic number, because the mean of its divisors is an integer number (102710250).

Almost surely, 2^1312485672 is an apocalyptic number.

1312485672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312485672 is an abundant number, since it is smaller than the sum of its proper divisors (1974242328).

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

1312485672 is a wasteful number, since it uses less digits than its factorization.

1312485672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91905 (or 91901 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 1312485672 is about 36228.2441197472. The cubic root of 1312485672 is about 1094.8758008463.

The spelling of 1312485672 in words is "one billion, three hundred twelve million, four hundred eighty-five thousand, six hundred seventy-two".