1312087316331 has 64 divisors (see below), whose sum is σ = 2089212383232. Its totient is φ = 723148800000.

The previous prime is 1312087316311. The next prime is 1312087316333. The reversal of 1312087316331 is 1336137802131.

It is a happy number.

It is not a de Polignac number, because 1312087316331 - 2²² = 1312083122027 is a prime.

It is a super-2 number, since 2×1312087316331² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1312087316331.

It is not an unprimeable number, because it can be changed into a prime (1312087316333) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11088781 + ... + 11206481.

It is an arithmetic number, because the mean of its divisors is an integer number (32643943488).

Almost surely, 2^{1312087316331} is an apocalyptic number.

1312087316331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1312087316331 is a deficient number, since it is larger than the sum of its proper divisors (777125066901).

1312087316331 is a wasteful number, since it uses less digits than its factorization.

1312087316331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118404.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 1312087316331 in words is "one trillion, three hundred twelve billion, eighty-seven million, three hundred sixteen thousand, three hundred thirty-one".