97931340 has 72 divisors (see below), whose sum is σ = 319916688. Its totient is φ = 24105600.

The previous prime is 97931311. The next prime is 97931357. The reversal of 97931340 is 4313979.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 97931295 and 97931304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18586 + ... + 23265.

Almost surely, 2^97931340 is an apocalyptic number.

97931340 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

97931340 is an abundant number, since it is smaller than the sum of its proper divisors (221985348).

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

97931340 is a wasteful number, since it uses less digits than its factorization.

97931340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41879 (or 41874 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 97931340 is about 9896.0264753082. The cubic root of 97931340 is about 460.9359331135.

The spelling of 97931340 in words is "ninety-seven million, nine hundred thirty-one thousand, three hundred forty".