31345304 has 16 divisors (see below), whose sum is σ = 59517600. Its totient is φ = 15473952.

The previous prime is 31345283. The next prime is 31345333. The reversal of 31345304 is 40354313.

It is a self number, because there is not a number n which added to its sum of digits gives 31345304.

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 3 ways as a sum of consecutive naturals, for example, 24167 + ... + 25430.

It is an arithmetic number, because the mean of its divisors is an integer number (3719850).

Almost surely, 2^31345304 is an apocalyptic number.

It is an amenable number.

31345304 is a deficient number, since it is larger than the sum of its proper divisors (28172296).

31345304 is a wasteful number, since it uses less digits than its factorization.

31345304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49682 (or 49678 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 31345304 is about 5598.6877033819. The cubic root of 31345304 is about 315.3001388904.

Adding to 31345304 its reverse (40354313), we get a palindrome (71699617).

Subtracting 31345304 from its reverse (40354313), we obtain a palindrome (9009009).

The spelling of 31345304 in words is "thirty-one million, three hundred forty-five thousand, three hundred four".