97531385 has 16 divisors (see below), whose sum is σ = 139574016. Its totient is φ = 63970368.

The previous prime is 97531337. The next prime is 97531403. The reversal of 97531385 is 58313579.

It is a happy number.

It is not a de Polignac number, because 97531385 - 2¹⁰ = 97530361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59774 + ... + 61383.

It is an arithmetic number, because the mean of its divisors is an integer number (8723376).

Almost surely, 2^97531385 is an apocalyptic number.

It is an amenable number.

97531385 is a deficient number, since it is larger than the sum of its proper divisors (42042631).

97531385 is a wasteful number, since it uses less digits than its factorization.

97531385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121192.

The product of its digits is 113400, while the sum is 41.

The square root of 97531385 is about 9875.7979424450. The cubic root of 97531385 is about 460.3075841397.

The spelling of 97531385 in words is "ninety-seven million, five hundred thirty-one thousand, three hundred eighty-five".