870131 has 2 divisors, whose sum is σ = 870132. Its totient is φ = 870130.

The previous prime is 870127. The next prime is 870137. The reversal of 870131 is 131078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 870131 - 2² = 870127 is a prime.

It is a super-2 number, since 2×870131² = 1514255914322, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (870137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435065 + 435066.

It is an arithmetic number, because the mean of its divisors is an integer number (435066).

2⁸⁷⁰¹³¹ is an apocalyptic number.

870131 is a deficient number, since it is larger than the sum of its proper divisors (1).

870131 is an equidigital number, since it uses as much as digits as its factorization.

870131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 870131 is about 932.8081260366. The cubic root of 870131 is about 95.4688183426.

It can be divided in two parts, 870 and 131, that added together give a palindrome (1001).

The spelling of 870131 in words is "eight hundred seventy thousand, one hundred thirty-one".