97431320 has 32 divisors (see below), whose sum is σ = 250538400. Its totient is φ = 33404928.

The previous prime is 97431317. The next prime is 97431337. The reversal of 97431320 is 2313479.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173705 + ... + 174264.

It is an arithmetic number, because the mean of its divisors is an integer number (7829325).

Almost surely, 2^97431320 is an apocalyptic number.

It is an amenable number.

97431320 is an abundant number, since it is smaller than the sum of its proper divisors (153107080).

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

97431320 is a wasteful number, since it uses less digits than its factorization.

97431320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347987 (or 347983 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 97431320 is about 9870.7304694232. The cubic root of 97431320 is about 460.1501085407.

Adding to 97431320 its reverse (2313479), we get a palindrome (99744799).

The spelling of 97431320 in words is "ninety-seven million, four hundred thirty-one thousand, three hundred twenty".