89817348431 has 2 divisors, whose sum is σ = 89817348432. Its totient is φ = 89817348430.

The previous prime is 89817348409. The next prime is 89817348437. The reversal of 89817348431 is 13484371898.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89817348431 - 2²² = 89813154127 is a prime.

It is a super-2 number, since 2×89817348431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89817348437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44908674215 + 44908674216.

It is an arithmetic number, because the mean of its divisors is an integer number (44908674216).

Almost surely, 2^89817348431 is an apocalyptic number.

89817348431 is a deficient number, since it is larger than the sum of its proper divisors (1).

89817348431 is an equidigital number, since it uses as much as digits as its factorization.

89817348431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 56.

The spelling of 89817348431 in words is "eighty-nine billion, eight hundred seventeen million, three hundred forty-eight thousand, four hundred thirty-one".