31364244 has 18 divisors (see below), whose sum is σ = 79281930. Its totient is φ = 10454736.

The previous prime is 31364233. The next prime is 31364251. The reversal of 31364244 is 44246313.

31364244 is a `hidden beast` number, since 3 + 13 + 642 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24800400 + 6563844 = 4980^2 + 2562^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 435579 + ... + 435650.

Almost surely, 2^31364244 is an apocalyptic number.

It is an amenable number.

31364244 is an abundant number, since it is smaller than the sum of its proper divisors (47917686).

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

31364244 is a wasteful number, since it uses less digits than its factorization.

31364244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871239 (or 871234 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 31364244 is about 5600.3789157520. The cubic root of 31364244 is about 315.3636314659.

The spelling of 31364244 in words is "thirty-one million, three hundred sixty-four thousand, two hundred forty-four".