87163331 has 2 divisors, whose sum is σ = 87163332. Its totient is φ = 87163330.

The previous prime is 87163273. The next prime is 87163337. The reversal of 87163331 is 13336178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87163331 - 2²⁶ = 20054467 is a prime.

It is a super-2 number, since 2×87163331² = 15194892542031122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87163337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43581665 + 43581666.

It is an arithmetic number, because the mean of its divisors is an integer number (43581666).

Almost surely, 2^87163331 is an apocalyptic number.

87163331 is a deficient number, since it is larger than the sum of its proper divisors (1).

87163331 is an equidigital number, since it uses as much as digits as its factorization.

87163331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 87163331 is about 9336.1304082580. The cubic root of 87163331 is about 443.3818790314.

The spelling of 87163331 in words is "eighty-seven million, one hundred sixty-three thousand, three hundred thirty-one".