97475731 has 4 divisors (see below), whose sum is σ = 97855272. Its totient is φ = 97096192.

The previous prime is 97475713. The next prime is 97475747. The reversal of 97475731 is 13757479.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97475731 is a prime.

It is a super-2 number, since 2×97475731² = 19003036267968722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97475701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189385 + ... + 189898.

It is an arithmetic number, because the mean of its divisors is an integer number (24463818).

Almost surely, 2^97475731 is an apocalyptic number.

97475731 is a deficient number, since it is larger than the sum of its proper divisors (379541).

97475731 is a wasteful number, since it uses less digits than its factorization.

97475731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379540.

The product of its digits is 185220, while the sum is 43.

The square root of 97475731 is about 9872.9798439985. The cubic root of 97475731 is about 460.2200129009.

The spelling of 97475731 in words is "ninety-seven million, four hundred seventy-five thousand, seven hundred thirty-one".