97287931 has 8 divisors (see below), whose sum is σ = 105752304. Its totient is φ = 88963680.

The previous prime is 97287919. The next prime is 97287959. The reversal of 97287931 is 13978279.

It is a happy number.

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

It is not a de Polignac number, because 97287931 - 2⁹ = 97287419 is a prime.

It is a super-2 number, since 2×97287931² = 18929883036521522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97287901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33580 + ... + 36361.

It is an arithmetic number, because the mean of its divisors is an integer number (13219038).

Almost surely, 2^97287931 is an apocalyptic number.

97287931 is a deficient number, since it is larger than the sum of its proper divisors (8464373).

97287931 is a wasteful number, since it uses less digits than its factorization.

97287931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70061.

The product of its digits is 190512, while the sum is 46.

The square root of 97287931 is about 9863.4644522095. The cubic root of 97287931 is about 459.9242644690.

The spelling of 97287931 in words is "ninety-seven million, two hundred eighty-seven thousand, nine hundred thirty-one".