97071157031 has 2 divisors, whose sum is σ = 97071157032. Its totient is φ = 97071157030.

The previous prime is 97071157009. The next prime is 97071157063. The reversal of 97071157031 is 13075117079.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97071157031 is a prime.

It is a super-2 number, since 2×97071157031² (a number of 23 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 97071157031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97071157081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48535578515 + 48535578516.

It is an arithmetic number, because the mean of its divisors is an integer number (48535578516).

Almost surely, 2^97071157031 is an apocalyptic number.

97071157031 is a deficient number, since it is larger than the sum of its proper divisors (1).

97071157031 is an equidigital number, since it uses as much as digits as its factorization.

97071157031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46305, while the sum is 41.

The spelling of 97071157031 in words is "ninety-seven billion, seventy-one million, one hundred fifty-seven thousand, thirty-one".