97931085 has 16 divisors (see below), whose sum is σ = 179074176. Its totient is φ = 44768448.

The previous prime is 97931069. The next prime is 97931087. The reversal of 97931085 is 58013979.

It is a happy number.

It is not a de Polignac number, because 97931085 - 2⁴ = 97931069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97931087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466234 + ... + 466443.

It is an arithmetic number, because the mean of its divisors is an integer number (11192136).

Almost surely, 2^97931085 is an apocalyptic number.

It is an amenable number.

97931085 is a deficient number, since it is larger than the sum of its proper divisors (81143091).

97931085 is a wasteful number, since it uses less digits than its factorization.

97931085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932692.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 97931085 is about 9896.0135913407. The cubic root of 97931085 is about 460.9355330415.

It can be divided in two parts, 9793 and 1085, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 97931085 in words is "ninety-seven million, nine hundred thirty-one thousand, eighty-five".