31112340131 has 2 divisors, whose sum is σ = 31112340132. Its totient is φ = 31112340130.

The previous prime is 31112340041. The next prime is 31112340163. The reversal of 31112340131 is 13104321113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31112340131 - 2¹⁸ = 31112077987 is a prime.

It is a super-2 number, since 2×31112340131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31112349131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556170065 + 15556170066.

It is an arithmetic number, because the mean of its divisors is an integer number (15556170066).

Almost surely, 2^31112340131 is an apocalyptic number.

31112340131 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112340131 is an equidigital number, since it uses as much as digits as its factorization.

31112340131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31112340131 its reverse (13104321113), we get a palindrome (44216661244).

The spelling of 31112340131 in words is "thirty-one billion, one hundred twelve million, three hundred forty thousand, one hundred thirty-one".