97839131 has 16 divisors (see below), whose sum is σ = 115170048. Its totient is φ = 82252800.

The previous prime is 97839109. The next prime is 97839139. The reversal of 97839131 is 13193879.

It is not a de Polignac number, because 97839131 - 2²² = 93644827 is a prime.

It is a super-2 number, since 2×97839131² = 19144991109670322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97839139) 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, 290 + ... + 13991.

It is an arithmetic number, because the mean of its divisors is an integer number (7198128).

Almost surely, 2^97839131 is an apocalyptic number.

97839131 is a deficient number, since it is larger than the sum of its proper divisors (17330917).

97839131 is a wasteful number, since it uses less digits than its factorization.

97839131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14342.

The product of its digits is 40824, while the sum is 41.

The square root of 97839131 is about 9891.3664880036. The cubic root of 97839131 is about 460.7912202018.

The spelling of 97839131 in words is "ninety-seven million, eight hundred thirty-nine thousand, one hundred thirty-one".