1312232020231 has 16 divisors (see below), whose sum is σ = 1493839646208. Its totient is φ = 1141015136800.

The previous prime is 1312232020207. The next prime is 1312232020237. The reversal of 1312232020231 is 1320202322131.

It is not a de Polignac number, because 1312232020231 - 2³⁹ = 762476206343 is a prime.

It is a super-2 number, since 2×1312232020231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312232020237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5511921 + ... + 5745061.

It is an arithmetic number, because the mean of its divisors is an integer number (93364977888).

Almost surely, 2^{1312232020231} is an apocalyptic number.

1312232020231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1312232020231 is a deficient number, since it is larger than the sum of its proper divisors (181607625977).

1312232020231 is a wasteful number, since it uses less digits than its factorization.

1312232020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255422.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1312232020231 its reverse (1320202322131), we get a palindrome (2632434342362).

The spelling of 1312232020231 in words is "one trillion, three hundred twelve billion, two hundred thirty-two million, twenty thousand, two hundred thirty-one".