1312370772 has 24 divisors (see below), whose sum is σ = 3077592000. Its totient is φ = 435257856.

The previous prime is 1312370767. The next prime is 1312370821. The reversal of 1312370772 is 2770732131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272397 + ... + 277172.

It is an arithmetic number, because the mean of its divisors is an integer number (128233000).

Almost surely, 2^1312370772 is an apocalyptic number.

1312370772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312370772 is an abundant number, since it is smaller than the sum of its proper divisors (1765221228).

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

1312370772 is a wasteful number, since it uses less digits than its factorization.

1312370772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549775 (or 549773 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 1312370772 is about 36226.6583057284. The cubic root of 1312370772 is about 1094.8438500466.

The spelling of 1312370772 in words is "one billion, three hundred twelve million, three hundred seventy thousand, seven hundred seventy-two".