31512044099 has 2 divisors, whose sum is σ = 31512044100. Its totient is φ = 31512044098.

The previous prime is 31512044093. The next prime is 31512044117. The reversal of 31512044099 is 99044021513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31512044099 - 2¹² = 31512040003 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31512044093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15756022049 + 15756022050.

It is an arithmetic number, because the mean of its divisors is an integer number (15756022050).

Almost surely, 2^31512044099 is an apocalyptic number.

31512044099 is a deficient number, since it is larger than the sum of its proper divisors (1).

31512044099 is an equidigital number, since it uses as much as digits as its factorization.

31512044099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 31512044099 in words is "thirty-one billion, five hundred twelve million, forty-four thousand, ninety-nine".