3131020011123 has 12 divisors (see below), whose sum is σ = 4522602512688. Its totient is φ = 2087338342320.

The previous prime is 3131020011103. The next prime is 3131020011127. The reversal of 3131020011123 is 3211100201313.

3131020011123 is a `hidden beast` number, since 31 + 310 + 200 + 1 + 1 + 123 = 666.

It is not a de Polignac number, because 3131020011123 - 2¹⁶ = 3131019945587 is a prime.

It is a super-2 number, since 2×3131020011123² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3131020011096 and 3131020011105.

It is not an unprimeable number, because it can be changed into a prime (3131020011127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2421753 + ... + 3482373.

It is an arithmetic number, because the mean of its divisors is an integer number (376883542724).

Almost surely, 2^{3131020011123} is an apocalyptic number.

3131020011123 is a deficient number, since it is larger than the sum of its proper divisors (1391582501565).

3131020011123 is a wasteful number, since it uses less digits than its factorization.

3131020011123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388634 (or 1388631 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 3131020011123 its reverse (3211100201313), we get a palindrome (6342120212436).

The spelling of 3131020011123 in words is "three trillion, one hundred thirty-one billion, twenty million, eleven thousand, one hundred twenty-three".