31545185089 has 12 divisors (see below), whose sum is σ = 34683635728. Its totient is φ = 28669168440.

The previous prime is 31545185083. The next prime is 31545185129. The reversal of 31545185089 is 98058154513.

It is not a de Polignac number, because 31545185089 - 2⁷ = 31545184961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31545185083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405022 + ... + 476584.

Almost surely, 2^31545185089 is an apocalyptic number.

It is an amenable number.

31545185089 is a deficient number, since it is larger than the sum of its proper divisors (3138450639).

31545185089 is a wasteful number, since it uses less digits than its factorization.

31545185089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75228 (or 75217 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 31545185089 in words is "thirty-one billion, five hundred forty-five million, one hundred eighty-five thousand, eighty-nine".