31122233010931 has 2 divisors, whose sum is σ = 31122233010932. Its totient is φ = 31122233010930.

The previous prime is 31122233010929. The next prime is 31122233010941. The reversal of 31122233010931 is 13901033222113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31122233010931 - 2¹ = 31122233010929 is a prime.

It is a super-2 number, since 2×31122233010931² (a number of 28 digits) contains 22 as substring.

Together with 31122233010929, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 31122233010893 and 31122233010902.

It is not a weakly prime, because it can be changed into another prime (31122233010901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561116505465 + 15561116505466.

It is an arithmetic number, because the mean of its divisors is an integer number (15561116505466).

Almost surely, 2^{31122233010931} is an apocalyptic number.

31122233010931 is a deficient number, since it is larger than the sum of its proper divisors (1).

31122233010931 is an equidigital number, since it uses as much as digits as its factorization.

31122233010931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 31122233010931 in words is "thirty-one trillion, one hundred twenty-two billion, two hundred thirty-three million, ten thousand, nine hundred thirty-one".