89813131 has 2 divisors, whose sum is σ = 89813132. Its totient is φ = 89813130.

The previous prime is 89813089. The next prime is 89813147. The reversal of 89813131 is 13131898.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89813131 - 2¹⁵ = 89780363 is a prime.

It is a super-2 number, since 2×89813131² = 16132797000046322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89813531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44906565 + 44906566.

It is an arithmetic number, because the mean of its divisors is an integer number (44906566).

Almost surely, 2^89813131 is an apocalyptic number.

89813131 is a deficient number, since it is larger than the sum of its proper divisors (1).

89813131 is an equidigital number, since it uses as much as digits as its factorization.

89813131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 89813131 is about 9476.9790017706. The cubic root of 89813131 is about 447.8300984007.

The spelling of 89813131 in words is "eighty-nine million, eight hundred thirteen thousand, one hundred thirty-one".