89187331 has 2 divisors, whose sum is σ = 89187332. Its totient is φ = 89187330.

The previous prime is 89187317. The next prime is 89187337. The reversal of 89187331 is 13378198.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89187331 is a prime.

It is a super-2 number, since 2×89187331² = 15908760021807122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89187337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44593665 + 44593666.

It is an arithmetic number, because the mean of its divisors is an integer number (44593666).

Almost surely, 2^89187331 is an apocalyptic number.

89187331 is a deficient number, since it is larger than the sum of its proper divisors (1).

89187331 is an equidigital number, since it uses as much as digits as its factorization.

89187331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 89187331 is about 9443.9044361959. The cubic root of 89187331 is about 446.7875429027.

The spelling of 89187331 in words is "eighty-nine million, one hundred eighty-seven thousand, three hundred thirty-one".