990112631 has 8 divisors (see below), whose sum is σ = 993395760. Its totient is φ = 986836032.

The previous prime is 990112621. The next prime is 990112633. The reversal of 990112631 is 136211099.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990112631 is a prime.

It is a super-2 number, since 2×990112631² = 1960646044131484322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990112633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614555 + ... + 616163.

It is an arithmetic number, because the mean of its divisors is an integer number (124174470).

Almost surely, 2^990112631 is an apocalyptic number.

990112631 is a deficient number, since it is larger than the sum of its proper divisors (3283129).

990112631 is a wasteful number, since it uses less digits than its factorization.

990112631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 990112631 is about 31466.0552182824. The cubic root of 990112631 is about 996.6932880416.

The spelling of 990112631 in words is "nine hundred ninety million, one hundred twelve thousand, six hundred thirty-one".