31120010989 has 8 divisors (see below), whose sum is σ = 31329031680. Its totient is φ = 30911647536.

The previous prime is 31120010959. The next prime is 31120011001. The reversal of 31120010989 is 98901002113.

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 31120010989 - 2²⁷ = 30985793261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120010959) 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, 69109 + ... + 258874.

It is an arithmetic number, because the mean of its divisors is an integer number (3916128960).

Almost surely, 2^31120010989 is an apocalyptic number.

It is an amenable number.

31120010989 is a deficient number, since it is larger than the sum of its proper divisors (209020691).

31120010989 is a wasteful number, since it uses less digits than its factorization.

31120010989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328619.

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 31120010989 in words is "thirty-one billion, one hundred twenty million, ten thousand, nine hundred eighty-nine".