1312232023331 has 4 divisors (see below), whose sum is σ = 1312443714000. Its totient is φ = 1312020332664.

The previous prime is 1312232023321. The next prime is 1312232023343. The reversal of 1312232023331 is 1333202322131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312232023331 - 2¹⁴ = 1312232006947 is a prime.

It is a super-2 number, since 2×1312232023331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312232023331.

It is not an unprimeable number, because it can be changed into a prime (1312232023321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105836036 + ... + 105848433.

It is an arithmetic number, because the mean of its divisors is an integer number (328110928500).

Almost surely, 2^{1312232023331} is an apocalyptic number.

1312232023331 is a deficient number, since it is larger than the sum of its proper divisors (211690669).

1312232023331 is an equidigital number, since it uses as much as digits as its factorization.

1312232023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211690668.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1312232023331 its reverse (1333202322131), we get a palindrome (2645434345462).

The spelling of 1312232023331 in words is "one trillion, three hundred twelve billion, two hundred thirty-two million, twenty-three thousand, three hundred thirty-one".