31230204 has 24 divisors (see below), whose sum is σ = 73027920. Its totient is φ = 10387584.

The previous prime is 31230191. The next prime is 31230209. The reversal of 31230204 is 40203213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3552 + ... + 8664.

It is an arithmetic number, because the mean of its divisors is an integer number (3042830).

Almost surely, 2^31230204 is an apocalyptic number.

It is an amenable number.

31230204 is an abundant number, since it is smaller than the sum of its proper divisors (41797716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31230204 is a wasteful number, since it uses less digits than its factorization.

31230204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5629 (or 5627 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 31230204 is about 5588.3990551857. The cubic root of 31230204 is about 314.9137380323.

Adding to 31230204 its reverse (40203213), we get a palindrome (71433417).

The spelling of 31230204 in words is "thirty-one million, two hundred thirty thousand, two hundred four".