97331691 has 8 divisors (see below), whose sum is σ = 132224400. Its totient is φ = 63663392.

The previous prime is 97331677. The next prime is 97331711. The reversal of 97331691 is 19613379.

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 97331691 - 2¹⁴ = 97315307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97331491) 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, 305916 + ... + 306233.

It is an arithmetic number, because the mean of its divisors is an integer number (16528050).

Almost surely, 2^97331691 is an apocalyptic number.

97331691 is a deficient number, since it is larger than the sum of its proper divisors (34892709).

97331691 is a wasteful number, since it uses less digits than its factorization.

97331691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612205.

The product of its digits is 30618, while the sum is 39.

The square root of 97331691 is about 9865.6824903298. The cubic root of 97331691 is about 459.9932119351.

The spelling of 97331691 in words is "ninety-seven million, three hundred thirty-one thousand, six hundred ninety-one".