89681031 has 24 divisors (see below), whose sum is σ = 142730640. Its totient is φ = 53808000.

The previous prime is 89681027. The next prime is 89681057. The reversal of 89681031 is 13018698.

It is not a de Polignac number, because 89681031 - 2² = 89681027 is a prime.

It is a super-2 number, since 2×89681031² = 16085374642445922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89681131) 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 in 23 ways as a sum of consecutive naturals, for example, 5515 + ... + 14483.

It is an arithmetic number, because the mean of its divisors is an integer number (5947110).

Almost surely, 2^89681031 is an apocalyptic number.

89681031 is a deficient number, since it is larger than the sum of its proper divisors (53049609).

89681031 is a wasteful number, since it uses less digits than its factorization.

89681031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9087 (or 9084 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 89681031 is about 9470.0069165761. The cubic root of 89681031 is about 447.6104297656.

It can be divided in two parts, 8968 and 1031, that added together give a palindrome (9999).

The spelling of 89681031 in words is "eighty-nine million, six hundred eighty-one thousand, thirty-one".