87240086031 has 24 divisors (see below), whose sum is σ = 138968220720. Its totient is φ = 48504137472.

The previous prime is 87240086023. The next prime is 87240086051. The reversal of 87240086031 is 13068004278.

It is not a de Polignac number, because 87240086031 - 2³ = 87240086023 is a prime.

It is a super-2 number, since 2×87240086031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87240086051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8014426 + ... + 8025303.

It is an arithmetic number, because the mean of its divisors is an integer number (5790342530).

Almost surely, 2^87240086031 is an apocalyptic number.

87240086031 is a deficient number, since it is larger than the sum of its proper divisors (51728134689).

87240086031 is a wasteful number, since it uses less digits than its factorization.

87240086031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16039783 (or 16039776 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 87240086031 in words is "eighty-seven billion, two hundred forty million, eighty-six thousand, thirty-one".