89820131 has 2 divisors, whose sum is σ = 89820132. Its totient is φ = 89820130.

The previous prime is 89820119. The next prime is 89820161. The reversal of 89820131 is 13102898.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89820131 is a prime.

It is a super-2 number, since 2×89820131² = 16135311865714322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89820161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44910065 + 44910066.

It is an arithmetic number, because the mean of its divisors is an integer number (44910066).

Almost surely, 2^89820131 is an apocalyptic number.

89820131 is a deficient number, since it is larger than the sum of its proper divisors (1).

89820131 is an equidigital number, since it uses as much as digits as its factorization.

89820131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 89820131 is about 9477.3483105772. The cubic root of 89820131 is about 447.8417326655.

The spelling of 89820131 in words is "eighty-nine million, eight hundred twenty thousand, one hundred thirty-one".