31934863031 has 2 divisors, whose sum is σ = 31934863032. Its totient is φ = 31934863030.

The previous prime is 31934863007. The next prime is 31934863043. The reversal of 31934863031 is 13036843913.

It is a strong prime.

It is an emirp because it is prime and its reverse (13036843913) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31934863031 is a prime.

It is a super-2 number, since 2×31934863031² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31934863031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31934863231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15967431515 + 15967431516.

It is an arithmetic number, because the mean of its divisors is an integer number (15967431516).

Almost surely, 2^31934863031 is an apocalyptic number.

31934863031 is a deficient number, since it is larger than the sum of its proper divisors (1).

31934863031 is an equidigital number, since it uses as much as digits as its factorization.

31934863031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 31934863031 in words is "thirty-one billion, nine hundred thirty-four million, eight hundred sixty-three thousand, thirty-one".