1231106204 has 24 divisors (see below), whose sum is σ = 2313305568. Its totient is φ = 571182080.

The previous prime is 1231106183. The next prime is 1231106243. The reversal of 1231106204 is 4026011321.

It is a congruent number.

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, 122669 + ... + 132324.

It is an arithmetic number, because the mean of its divisors is an integer number (96387732).

Almost surely, 2^1231106204 is an apocalyptic number.

It is an amenable number.

1231106204 is a deficient number, since it is larger than the sum of its proper divisors (1082199364).

1231106204 is a wasteful number, since it uses less digits than its factorization.

1231106204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255085 (or 255083 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1231106204 is about 35087.1230510568. The cubic root of 1231106204 is about 1071.7623746993.

Adding to 1231106204 its reverse (4026011321), we get a palindrome (5257117525).

The spelling of 1231106204 in words is "one billion, two hundred thirty-one million, one hundred six thousand, two hundred four".