1233431906 has 32 divisors (see below), whose sum is σ = 2311068672. Its totient is φ = 481466880.

The previous prime is 1233431893. The next prime is 1233431933. The reversal of 1233431906 is 6091343321.

It is an unprimeable number.

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, 76211 + ... + 90966.

It is an arithmetic number, because the mean of its divisors is an integer number (72220896).

Almost surely, 2^1233431906 is an apocalyptic number.

1233431906 is a deficient number, since it is larger than the sum of its proper divisors (1077636766).

1233431906 is a wasteful number, since it uses less digits than its factorization.

1233431906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167234.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 1233431906 is about 35120.2492303230. The cubic root of 1233431906 is about 1072.4368445196.

The spelling of 1233431906 in words is "one billion, two hundred thirty-three million, four hundred thirty-one thousand, nine hundred six".