31204474 has 24 divisors (see below), whose sum is σ = 54839700. Its totient is φ = 13277376.

The previous prime is 31204471. The next prime is 31204487. The reversal of 31204474 is 47440213.

It can be written as a sum of positive squares in 2 ways, for example, as 23941449 + 7263025 = 4893^2 + 2695^2 .

It is not an unprimeable number, because it can be changed into a prime (31204471) 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 11 ways as a sum of consecutive naturals, for example, 13534 + ... + 15670.

Almost surely, 2^31204474 is an apocalyptic number.

31204474 is a deficient number, since it is larger than the sum of its proper divisors (23635226).

31204474 is a wasteful number, since it uses less digits than its factorization.

31204474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 31204474 is about 5586.0964903947. The cubic root of 31204474 is about 314.8272303604.

Adding to 31204474 its reverse (47440213), we get a palindrome (78644687).

The spelling of 31204474 in words is "thirty-one million, two hundred four thousand, four hundred seventy-four".