89973131 has 2 divisors, whose sum is σ = 89973132. Its totient is φ = 89973130.

The previous prime is 89973101. The next prime is 89973137. The reversal of 89973131 is 13137998.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89973131 - 2¹⁰ = 89972107 is a prime.

It is a super-2 number, since 2×89973131² = 16190328603886322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89973137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44986565 + 44986566.

It is an arithmetic number, because the mean of its divisors is an integer number (44986566).

Almost surely, 2^89973131 is an apocalyptic number.

89973131 is a deficient number, since it is larger than the sum of its proper divisors (1).

89973131 is an equidigital number, since it uses as much as digits as its factorization.

89973131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 41.

The square root of 89973131 is about 9485.4167541548. The cubic root of 89973131 is about 448.0958736006.

The spelling of 89973131 in words is "eighty-nine million, nine hundred seventy-three thousand, one hundred thirty-one".