31123211232113 has 24 divisors (see below), whose sum is σ = 42104382406464. Its totient is φ = 22386325753440.

The previous prime is 31123211232077. The next prime is 31123211232119.

31123211232113 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31123211232113 - 2²⁸ = 31122942796657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31123211232119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1413267131 + ... + 1413289152.

It is an arithmetic number, because the mean of its divisors is an integer number (1754349266936).

Almost surely, 2^{31123211232113} is an apocalyptic number.

It is an amenable number.

31123211232113 is a deficient number, since it is larger than the sum of its proper divisors (10981171174351).

31123211232113 is a wasteful number, since it uses less digits than its factorization.

31123211232113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826556325 (or 2826556314 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

It can be divided in two parts, 3112321 and 1232113, that added together give a palindrome (4344434).

The spelling of 31123211232113 in words is "thirty-one trillion, one hundred twenty-three billion, two hundred eleven million, two hundred thirty-two thousand, one hundred thirteen".