31344472 has 32 divisors (see below), whose sum is σ = 61056000. Its totient is φ = 15069600.

The previous prime is 31344457. The next prime is 31344497. The reversal of 31344472 is 27444313.

It is a self number, because there is not a number n which added to its sum of digits gives 31344472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52029 + ... + 52627.

It is an arithmetic number, because the mean of its divisors is an integer number (1908000).

Almost surely, 2^31344472 is an apocalyptic number.

It is an amenable number.

31344472 is a deficient number, since it is larger than the sum of its proper divisors (29711528).

31344472 is a wasteful number, since it uses less digits than its factorization.

31344472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 843 counting only the distinct ones).

The product of its digits is 8064, while the sum is 28.

The square root of 31344472 is about 5598.6133997625. The cubic root of 31344472 is about 315.2973491898.

Adding to 31344472 its reverse (27444313), we get a palindrome (58788785).

The spelling of 31344472 in words is "thirty-one million, three hundred forty-four thousand, four hundred seventy-two".