97261731 has 24 divisors (see below), whose sum is σ = 163594080. Its totient is φ = 54527616.

The previous prime is 97261691. The next prime is 97261739. The reversal of 97261731 is 13716279.

It is a happy number.

97261731 is a `hidden beast` number, since 9 + 7 + 2 + 617 + 31 = 666.

It is not a de Polignac number, because 97261731 - 2¹⁴ = 97245347 is a prime.

It is a super-2 number, since 2×97261731² = 18919688634232722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97261739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11226 + ... + 17903.

It is an arithmetic number, because the mean of its divisors is an integer number (6816420).

Almost surely, 2^97261731 is an apocalyptic number.

97261731 is a deficient number, since it is larger than the sum of its proper divisors (66332349).

97261731 is a wasteful number, since it uses less digits than its factorization.

97261731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29195 (or 29192 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 97261731 is about 9862.1362290327. The cubic root of 97261731 is about 459.8829743265.

The spelling of 97261731 in words is "ninety-seven million, two hundred sixty-one thousand, seven hundred thirty-one".