31130994 has 8 divisors (see below), whose sum is σ = 62262000. Its totient is φ = 10376996.

The previous prime is 31130993. The next prime is 31131031. The reversal of 31130994 is 49903113.

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

31130994 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (31130993) 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 3 ways as a sum of consecutive naturals, for example, 2594244 + ... + 2594255.

It is an arithmetic number, because the mean of its divisors is an integer number (7782750).

Almost surely, 2^31130994 is an apocalyptic number.

31130994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31130994 is a wasteful number, since it uses less digits than its factorization.

31130994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188504.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 31130994 is about 5579.5155703699. The cubic root of 31130994 is about 314.5799187423.

The spelling of 31130994 in words is "thirty-one million, one hundred thirty thousand, nine hundred ninety-four".