31033102157 has 2 divisors, whose sum is σ = 31033102158. Its totient is φ = 31033102156.

The previous prime is 31033102117. The next prime is 31033102181. The reversal of 31033102157 is 75120133013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31023185956 + 9916201 = 176134^2 + 3149^2 .

It is a cyclic number.

It is not a de Polignac number, because 31033102157 - 2⁸ = 31033101901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31033102117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15516551078 + 15516551079.

It is an arithmetic number, because the mean of its divisors is an integer number (15516551079).

Almost surely, 2^31033102157 is an apocalyptic number.

It is an amenable number.

31033102157 is a deficient number, since it is larger than the sum of its proper divisors (1).

31033102157 is an equidigital number, since it uses as much as digits as its factorization.

31033102157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

The spelling of 31033102157 in words is "thirty-one billion, thirty-three million, one hundred two thousand, one hundred fifty-seven".