1312903931 has 8 divisors (see below), whose sum is σ = 1413696240. Its totient is φ = 1214729728.

The previous prime is 1312903883. The next prime is 1312903937. The reversal of 1312903931 is 1393092131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312903931 - 2¹⁴ = 1312887547 is a prime.

It is a super-2 number, since 2×1312903931² = 3447433464070505522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312903937) 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, 653486 + ... + 655491.

It is an arithmetic number, because the mean of its divisors is an integer number (176712030).

Almost surely, 2^1312903931 is an apocalyptic number.

1312903931 is a deficient number, since it is larger than the sum of its proper divisors (100792309).

1312903931 is a wasteful number, since it uses less digits than its factorization.

1312903931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309053.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 1312903931 is about 36234.0162140495. The cubic root of 1312903931 is about 1094.9920924069.

The spelling of 1312903931 in words is "one billion, three hundred twelve million, nine hundred three thousand, nine hundred thirty-one".