31090089 has 8 divisors (see below), whose sum is σ = 43255872. Its totient is φ = 19825520.

The previous prime is 31090079. The next prime is 31090091. The reversal of 31090089 is 98009013.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31090089 - 2¹² = 31085993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31090079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225222 + ... + 225359.

It is an arithmetic number, because the mean of its divisors is an integer number (5406984).

Almost surely, 2^31090089 is an apocalyptic number.

It is an amenable number.

31090089 is a deficient number, since it is larger than the sum of its proper divisors (12165783).

31090089 is a wasteful number, since it uses less digits than its factorization.

31090089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450607.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 31090089 is about 5575.8487246338. The cubic root of 31090089 is about 314.4420761400.

The spelling of 31090089 in words is "thirty-one million, ninety thousand, eighty-nine".