31112323122031 has 2 divisors, whose sum is σ = 31112323122032. Its totient is φ = 31112323122030.

The previous prime is 31112323122019. The next prime is 31112323122059. The reversal of 31112323122031 is 13022132321113.

It is a weak prime.

It is an emirp because it is prime and its reverse (13022132321113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31112323122031 is a prime.

It is a super-2 number, since 2×31112323122031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31112323121987 and 31112323122005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31112323122731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556161561015 + 15556161561016.

It is an arithmetic number, because the mean of its divisors is an integer number (15556161561016).

Almost surely, 2^{31112323122031} is an apocalyptic number.

31112323122031 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112323122031 is an equidigital number, since it uses as much as digits as its factorization.

31112323122031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31112323122031 its reverse (13022132321113), we get a palindrome (44134455443144).

The spelling of 31112323122031 in words is "thirty-one trillion, one hundred twelve billion, three hundred twenty-three million, one hundred twenty-two thousand, thirty-one".