31044890 has 16 divisors (see below), whose sum is σ = 59168232. Its totient is φ = 11687424.

The previous prime is 31044883. The next prime is 31044899. The reversal of 31044890 is 9844013.

It can be written as a sum of positive squares in 4 ways, for example, as 30591961 + 452929 = 5531^2 + 673^2 .

It is a super-2 number, since 2×31044890² = 1927570390224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31044899) 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, 91139 + ... + 91478.

Almost surely, 2^31044890 is an apocalyptic number.

31044890 is a deficient number, since it is larger than the sum of its proper divisors (28123342).

31044890 is a wasteful number, since it uses less digits than its factorization.

31044890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182641.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 31044890 is about 5571.7941455154. The cubic root of 31044890 is about 314.2896228361.

The spelling of 31044890 in words is "thirty-one million, forty-four thousand, eight hundred ninety".