1312223132331 has 64 divisors (see below), whose sum is σ = 2048320189440. Its totient is φ = 829393447680.

The previous prime is 1312223132329. The next prime is 1312223132447. The reversal of 1312223132331 is 1332313222131.

1312223132331 is a `hidden beast` number, since 1 + 3 + 12 + 2 + 2 + 313 + 2 + 331 = 666.

It is not a de Polignac number, because 1312223132331 - 2¹ = 1312223132329 is a prime.

It is a super-2 number, since 2×1312223132331² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1312223132295 and 1312223132304.

It is not an unprimeable number, because it can be changed into a prime (1312223172331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5944546 + ... + 6161336.

It is an arithmetic number, because the mean of its divisors is an integer number (32005002960).

Almost surely, 2^{1312223132331} is an apocalyptic number.

1312223132331 is a deficient number, since it is larger than the sum of its proper divisors (736097057109).

1312223132331 is a wasteful number, since it uses less digits than its factorization.

1312223132331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216993 (or 216987 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1312223132331 its reverse (1332313222131), we get a palindrome (2644536354462).

The spelling of 1312223132331 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, one hundred thirty-two thousand, three hundred thirty-one".