97312985 has 16 divisors (see below), whose sum is σ = 145590912. Its totient is φ = 60662400.

The previous prime is 97312979. The next prime is 97312991. The reversal of 97312985 is 58921379.

It is an interprime number because it is at equal distance from previous prime (97312979) and next prime (97312991).

It is not a de Polignac number, because 97312985 - 2⁶ = 97312921 is a prime.

It is a super-2 number, since 2×97312985² = 18939634099220450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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, 125996 + ... + 126765.

It is an arithmetic number, because the mean of its divisors is an integer number (9099432).

Almost surely, 2^97312985 is an apocalyptic number.

It is an amenable number.

97312985 is a deficient number, since it is larger than the sum of its proper divisors (48277927).

97312985 is a wasteful number, since it uses less digits than its factorization.

97312985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252784.

The product of its digits is 136080, while the sum is 44.

The square root of 97312985 is about 9864.7344110219. The cubic root of 97312985 is about 459.9637416286.

The spelling of 97312985 in words is "ninety-seven million, three hundred twelve thousand, nine hundred eighty-five".