31331009107 has 2 divisors, whose sum is σ = 31331009108. Its totient is φ = 31331009106.

The previous prime is 31331009053. The next prime is 31331009113. The reversal of 31331009107 is 70190013313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31331009107 is a prime.

It is not a weakly prime, because it can be changed into another prime (31331009137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15665504553 + 15665504554.

It is an arithmetic number, because the mean of its divisors is an integer number (15665504554).

Almost surely, 2^31331009107 is an apocalyptic number.

31331009107 is a deficient number, since it is larger than the sum of its proper divisors (1).

31331009107 is an equidigital number, since it uses as much as digits as its factorization.

31331009107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 28.

The spelling of 31331009107 in words is "thirty-one billion, three hundred thirty-one million, nine thousand, one hundred seven".