1312012032331 has 32 divisors (see below), whose sum is σ = 1774441041408. Its totient is φ = 936816503040.

The previous prime is 1312012032301. The next prime is 1312012032421. The reversal of 1312012032331 is 1332302102131.

It is not a de Polignac number, because 1312012032331 - 2²⁷ = 1311877814603 is a prime.

It is a super-2 number, since 2×1312012032331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312012032301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4646445 + ... + 4920718.

It is an arithmetic number, because the mean of its divisors is an integer number (55451282544).

Almost surely, 2^{1312012032331} is an apocalyptic number.

1312012032331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1312012032331 is a deficient number, since it is larger than the sum of its proper divisors (462429009077).

1312012032331 is a wasteful number, since it uses less digits than its factorization.

1312012032331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9567331.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1312012032331 its reverse (1332302102131), we get a palindrome (2644314134462).

The spelling of 1312012032331 in words is "one trillion, three hundred twelve billion, twelve million, thirty-two thousand, three hundred thirty-one".