87650131 has 2 divisors, whose sum is σ = 87650132. Its totient is φ = 87650130.

The previous prime is 87650119. The next prime is 87650141. The reversal of 87650131 is 13105678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87650131 - 2⁵ = 87650099 is a prime.

It is a super-2 number, since 2×87650131² = 15365090928634322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87650093 and 87650102.

It is not a weakly prime, because it can be changed into another prime (87650141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43825065 + 43825066.

It is an arithmetic number, because the mean of its divisors is an integer number (43825066).

Almost surely, 2^87650131 is an apocalyptic number.

87650131 is a deficient number, since it is larger than the sum of its proper divisors (1).

87650131 is an equidigital number, since it uses as much as digits as its factorization.

87650131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 87650131 is about 9362.1648671661. The cubic root of 87650131 is about 444.2057642032.

The spelling of 87650131 in words is "eighty-seven million, six hundred fifty thousand, one hundred thirty-one".