31132311022131 has 32 divisors (see below), whose sum is σ = 45717525923328. Its totient is φ = 18687409789440.

The previous prime is 31132311022103. The next prime is 31132311022193. The reversal of 31132311022131 is 13122011323113.

It is a de Polignac number, because none of the positive numbers 2^k-31132311022131 is a prime.

It is a super-2 number, since 2×31132311022131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31132311022931) 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, 2043885 + ... + 8151201.

It is an arithmetic number, because the mean of its divisors is an integer number (1428672685104).

Almost surely, 2^{31132311022131} is an apocalyptic number.

31132311022131 is a deficient number, since it is larger than the sum of its proper divisors (14585214901197).

31132311022131 is a wasteful number, since it uses less digits than its factorization.

31132311022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108811.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31132311022131 its reverse (13122011323113), we get a palindrome (44254322345244).

The spelling of 31132311022131 in words is "thirty-one trillion, one hundred thirty-two billion, three hundred eleven million, twenty-two thousand, one hundred thirty-one".