97097631149 has 2 divisors, whose sum is σ = 97097631150. Its totient is φ = 97097631148.

The previous prime is 97097631097. The next prime is 97097631157. The reversal of 97097631149 is 94113679079.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75230615524 + 21867015625 = 274282^2 + 147875^2 .

It is a cyclic number.

It is not a de Polignac number, because 97097631149 - 2¹⁶ = 97097565613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97097631094 and 97097631103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97097631199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48548815574 + 48548815575.

It is an arithmetic number, because the mean of its divisors is an integer number (48548815575).

Almost surely, 2^97097631149 is an apocalyptic number.

It is an amenable number.

97097631149 is a deficient number, since it is larger than the sum of its proper divisors (1).

97097631149 is an equidigital number, since it uses as much as digits as its factorization.

97097631149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2571912, while the sum is 56.

The spelling of 97097631149 in words is "ninety-seven billion, ninety-seven million, six hundred thirty-one thousand, one hundred forty-nine".