97917131 has 8 divisors (see below), whose sum is σ = 105916944. Its totient is φ = 89984160.

The previous prime is 97917107. The next prime is 97917191. The reversal of 97917131 is 13171979.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97917131 - 2⁶ = 97917067 is a prime.

It is a super-2 number, since 2×97917131² = 19175529086542322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97917191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13640 + ... + 19541.

It is an arithmetic number, because the mean of its divisors is an integer number (13239618).

Almost surely, 2^97917131 is an apocalyptic number.

97917131 is a deficient number, since it is larger than the sum of its proper divisors (7999813).

97917131 is a wasteful number, since it uses less digits than its factorization.

97917131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33421.

The product of its digits is 11907, while the sum is 38.

The square root of 97917131 is about 9895.3085348563. The cubic root of 97917131 is about 460.9136394145.

The spelling of 97917131 in words is "ninety-seven million, nine hundred seventeen thousand, one hundred thirty-one".