87036731 has 2 divisors, whose sum is σ = 87036732. Its totient is φ = 87036730.

The previous prime is 87036721. The next prime is 87036757. The reversal of 87036731 is 13763078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87036731 - 2⁶ = 87036667 is a prime.

It is a super-2 number, since 2×87036731² = 15150785086332722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87036691 and 87036700.

It is not a weakly prime, because it can be changed into another prime (87036721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43518365 + 43518366.

It is an arithmetic number, because the mean of its divisors is an integer number (43518366).

Almost surely, 2^87036731 is an apocalyptic number.

87036731 is a deficient number, since it is larger than the sum of its proper divisors (1).

87036731 is an equidigital number, since it uses as much as digits as its factorization.

87036731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 87036731 is about 9329.3478335841. The cubic root of 87036731 is about 443.1671123266.

The spelling of 87036731 in words is "eighty-seven million, thirty-six thousand, seven hundred thirty-one".