31447004 has 12 divisors (see below), whose sum is σ = 55321728. Its totient is φ = 15640800.

The previous prime is 31447001. The next prime is 31447019. The reversal of 31447004 is 40074413.

31447004 = 307² + 308² + ... + 497².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31447001) 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 3 ways as a sum of consecutive naturals, for example, 19817 + ... + 21344.

It is an arithmetic number, because the mean of its divisors is an integer number (4610144).

Almost surely, 2^31447004 is an apocalyptic number.

It is an amenable number.

31447004 is a deficient number, since it is larger than the sum of its proper divisors (23874724).

31447004 is a wasteful number, since it uses less digits than its factorization.

31447004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41356 (or 41354 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 31447004 is about 5607.7628337867. The cubic root of 31447004 is about 315.6407684048.

The spelling of 31447004 in words is "thirty-one million, four hundred forty-seven thousand, four".