31332123131231 has 32 divisors (see below), whose sum is σ = 37282549570560. Its totient is φ = 26035715464704.

The previous prime is 31332123131219. The next prime is 31332123131233. The reversal of 31332123131231 is 13213132123313.

It is a cyclic number.

It is not a de Polignac number, because 31332123131231 - 2²⁶ = 31332056022367 is a prime.

It is a super-2 number, since 2×31332123131231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31332123131194 and 31332123131203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31332123131233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96817016 + ... + 97140098.

It is an arithmetic number, because the mean of its divisors is an integer number (1165079674080).

Almost surely, 2^{31332123131231} is an apocalyptic number.

31332123131231 is a deficient number, since it is larger than the sum of its proper divisors (5950426439329).

31332123131231 is a wasteful number, since it uses less digits than its factorization.

31332123131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342215.

The product of its digits is 5832, while the sum is 29.

Adding to 31332123131231 its reverse (13213132123313), we get a palindrome (44545255254544).

The spelling of 31332123131231 in words is "thirty-one trillion, three hundred thirty-two billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred thirty-one".