70087131 has 12 divisors (see below), whose sum is σ = 101328240. Its totient is φ = 46682640.

The previous prime is 70087123. The next prime is 70087169. The reversal of 70087131 is 13178007.

It is not a de Polignac number, because 70087131 - 2³ = 70087123 is a prime.

It is a super-2 number, since 2×70087131² = 9824411863622322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70087095 and 70087104.

It is not an unprimeable number, because it can be changed into a prime (70087111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9610 + ... + 15248.

It is an arithmetic number, because the mean of its divisors is an integer number (8444020).

Almost surely, 2^70087131 is an apocalyptic number.

70087131 is a deficient number, since it is larger than the sum of its proper divisors (31241109).

70087131 is a wasteful number, since it uses less digits than its factorization.

70087131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7026 (or 7023 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 70087131 is about 8371.8057191982. The cubic root of 70087131 is about 412.2994551341.

The spelling of 70087131 in words is "seventy million, eighty-seven thousand, one hundred thirty-one".