97931238 has 8 divisors (see below), whose sum is σ = 195862488. Its totient is φ = 32643744.

The previous prime is 97931213. The next prime is 97931243. The reversal of 97931238 is 83213979.

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

97931238 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 97931238.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8160931 + ... + 8160942.

It is an arithmetic number, because the mean of its divisors is an integer number (24482811).

Almost surely, 2^97931238 is an apocalyptic number.

97931238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97931238 is a wasteful number, since it uses less digits than its factorization.

97931238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16321878.

The product of its digits is 81648, while the sum is 42.

The square root of 97931238 is about 9896.0213217232. The cubic root of 97931238 is about 460.9357730848.

The spelling of 97931238 in words is "ninety-seven million, nine hundred thirty-one thousand, two hundred thirty-eight".