87431301169 has 2 divisors, whose sum is σ = 87431301170. Its totient is φ = 87431301168.

The previous prime is 87431301163. The next prime is 87431301179. The reversal of 87431301169 is 96110313478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86374271025 + 1057030144 = 293895^2 + 32512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87431301169 is a prime.

It is a super-2 number, since 2×87431301169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87431301163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43715650584 + 43715650585.

It is an arithmetic number, because the mean of its divisors is an integer number (43715650585).

Almost surely, 2^87431301169 is an apocalyptic number.

It is an amenable number.

87431301169 is a deficient number, since it is larger than the sum of its proper divisors (1).

87431301169 is an equidigital number, since it uses as much as digits as its factorization.

87431301169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 87431301169 in words is "eighty-seven billion, four hundred thirty-one million, three hundred one thousand, one hundred sixty-nine".