97658131 has 2 divisors, whose sum is σ = 97658132. Its totient is φ = 97658130.

The previous prime is 97658129. The next prime is 97658137. The reversal of 97658131 is 13185679.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97658131 - 2¹ = 97658129 is a prime.

It is a super-2 number, since 2×97658131² = 19074221100826322, which contains 22 as substring.

Together with 97658129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (97658137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48829065 + 48829066.

It is an arithmetic number, because the mean of its divisors is an integer number (48829066).

Almost surely, 2^97658131 is an apocalyptic number.

97658131 is a deficient number, since it is larger than the sum of its proper divisors (1).

97658131 is an equidigital number, since it uses as much as digits as its factorization.

97658131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 97658131 is about 9882.2128594764. The cubic root of 97658131 is about 460.5068939674.

The spelling of 97658131 in words is "ninety-seven million, six hundred fifty-eight thousand, one hundred thirty-one".