31672089 has 12 divisors (see below), whose sum is σ = 47326500. Its totient is φ = 20386464.

The previous prime is 31672087. The next prime is 31672097. The reversal of 31672089 is 98027613.

It can be written as a sum of positive squares in 2 ways, for example, as 10188864 + 21483225 = 3192^2 + 4635^2 .

It is not a de Polignac number, because 31672089 - 2¹ = 31672087 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31672087) 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 11 ways as a sum of consecutive naturals, for example, 60414 + ... + 60935.

It is an arithmetic number, because the mean of its divisors is an integer number (3943875).

Almost surely, 2^31672089 is an apocalyptic number.

It is an amenable number.

31672089 is a deficient number, since it is larger than the sum of its proper divisors (15654411).

31672089 is a wasteful number, since it uses less digits than its factorization.

31672089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121384 (or 121381 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 31672089 is about 5627.7961050486. The cubic root of 31672089 is about 316.3920553102.

The spelling of 31672089 in words is "thirty-one million, six hundred seventy-two thousand, eighty-nine".