31013910097 has 4 divisors (see below), whose sum is σ = 31014641716. Its totient is φ = 31013178480.

The previous prime is 31013910077. The next prime is 31013910107. The reversal of 31013910097 is 79001931013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2078539281 + 28935370816 = 45591^2 + 170104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31013910097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31013910077) 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 in 3 ways as a sum of consecutive naturals, for example, 298038 + ... + 388399.

It is an arithmetic number, because the mean of its divisors is an integer number (7753660429).

Almost surely, 2^31013910097 is an apocalyptic number.

It is an amenable number.

31013910097 is a deficient number, since it is larger than the sum of its proper divisors (731619).

31013910097 is an equidigital number, since it uses as much as digits as its factorization.

31013910097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731618.

The product of its (nonzero) digits is 5103, while the sum is 34.

The spelling of 31013910097 in words is "thirty-one billion, thirteen million, nine hundred ten thousand, ninety-seven".