31140034931 has 2 divisors, whose sum is σ = 31140034932. Its totient is φ = 31140034930.

The previous prime is 31140034921. The next prime is 31140034943. The reversal of 31140034931 is 13943004113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31140034931 - 2¹⁸ = 31139772787 is a prime.

It is a super-2 number, since 2×31140034931² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31140034894 and 31140034903.

It is not a weakly prime, because it can be changed into another prime (31140034901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15570017465 + 15570017466.

It is an arithmetic number, because the mean of its divisors is an integer number (15570017466).

Almost surely, 2^31140034931 is an apocalyptic number.

31140034931 is a deficient number, since it is larger than the sum of its proper divisors (1).

31140034931 is an equidigital number, since it uses as much as digits as its factorization.

31140034931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 31140034931 in words is "thirty-one billion, one hundred forty million, thirty-four thousand, nine hundred thirty-one".