31044229 has 4 divisors (see below), whose sum is σ = 31150476. Its totient is φ = 30937984.

The previous prime is 31044197. The next prime is 31044259. The reversal of 31044229 is 92244013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92244013 = 5077 ⋅18169.

It can be written as a sum of positive squares in 2 ways, for example, as 14250625 + 16793604 = 3775^2 + 4098^2 .

It is a cyclic number.

It is not a de Polignac number, because 31044229 - 2⁵ = 31044197 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 (31044259) 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, 52684 + ... + 53269.

It is an arithmetic number, because the mean of its divisors is an integer number (7787619).

Almost surely, 2^31044229 is an apocalyptic number.

It is an amenable number.

31044229 is a deficient number, since it is larger than the sum of its proper divisors (106247).

31044229 is a wasteful number, since it uses less digits than its factorization.

31044229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106246.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 31044229 is about 5571.7348285790. The cubic root of 31044229 is about 314.2873922283.

The spelling of 31044229 in words is "thirty-one million, forty-four thousand, two hundred twenty-nine".