1312131103231 has 64 divisors (see below), whose sum is σ = 1612310676480. Its totient is φ = 1054517667840.

The previous prime is 1312131103189. The next prime is 1312131103253. The reversal of 1312131103231 is 1323011312131.

It is not a de Polignac number, because 1312131103231 - 2⁹ = 1312131102719 is a prime.

It is a super-2 number, since 2×1312131103231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312131103271) 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, 46943446 + ... + 46971388.

It is an arithmetic number, because the mean of its divisors is an integer number (25192354320).

Almost surely, 2^{1312131103231} is an apocalyptic number.

1312131103231 is a deficient number, since it is larger than the sum of its proper divisors (300179573249).

1312131103231 is a wasteful number, since it uses less digits than its factorization.

1312131103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28256.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1312131103231 its reverse (1323011312131), we get a palindrome (2635142415362).

The spelling of 1312131103231 in words is "one trillion, three hundred twelve billion, one hundred thirty-one million, one hundred three thousand, two hundred thirty-one".