31204413 has 16 divisors (see below), whose sum is σ = 46363200. Its totient is φ = 20742480.

The previous prime is 31204387. The next prime is 31204421. The reversal of 31204413 is 31440213.

It is not a de Polignac number, because 31204413 - 2⁹ = 31203901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204423) 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 15 ways as a sum of consecutive naturals, for example, 9018 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (2897700).

Almost surely, 2^31204413 is an apocalyptic number.

It is an amenable number.

31204413 is a deficient number, since it is larger than the sum of its proper divisors (15158787).

31204413 is a wasteful number, since it uses less digits than its factorization.

31204413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369 (or 3363 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 31204413 is about 5586.0910304076. The cubic root of 31204413 is about 314.8270252138.

Adding to 31204413 its reverse (31440213), we get a palindrome (62644626).

The spelling of 31204413 in words is "thirty-one million, two hundred four thousand, four hundred thirteen".