1231403204 has 24 divisors (see below), whose sum is σ = 2229728256. Its totient is φ = 594432000.

The previous prime is 1231403161. The next prime is 1231403269. The reversal of 1231403204 is 4023041321.

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, 41924 + ... + 64964.

It is an arithmetic number, because the mean of its divisors is an integer number (92905344).

Almost surely, 2^1231403204 is an apocalyptic number.

It is an amenable number.

1231403204 is a deficient number, since it is larger than the sum of its proper divisors (998325052).

1231403204 is a wasteful number, since it uses less digits than its factorization.

1231403204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23507 (or 23505 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1231403204 is about 35091.3551177494. The cubic root of 1231403204 is about 1071.8485540586.

Adding to 1231403204 its reverse (4023041321), we get a palindrome (5254444525).

The spelling of 1231403204 in words is "one billion, two hundred thirty-one million, four hundred three thousand, two hundred four".