31204412 has 12 divisors (see below), whose sum is σ = 55877976. Its totient is φ = 15239280.

The previous prime is 31204387. The next prime is 31204421. The reversal of 31204412 is 21440213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90539 + ... + 90882.

It is an arithmetic number, because the mean of its divisors is an integer number (4656498).

Almost surely, 2^31204412 is an apocalyptic number.

It is an amenable number.

31204412 is a deficient number, since it is larger than the sum of its proper divisors (24673564).

31204412 is a wasteful number, since it uses less digits than its factorization.

31204412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181468 (or 181466 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31204412 is about 5586.0909408995. The cubic root of 31204412 is about 314.8270218507.

Adding to 31204412 its reverse (21440213), we get a palindrome (52644625).

The spelling of 31204412 in words is "thirty-one million, two hundred four thousand, four hundred twelve".