1232112009 has 32 divisors (see below), whose sum is σ = 1821294720. Its totient is φ = 737364992.

The previous prime is 1232111999. The next prime is 1232112017. The reversal of 1232112009 is 9002112321.

It is a cyclic number.

It is not a de Polignac number, because 1232112009 - 2⁹ = 1232111497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1232112109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117739 + ... + 127775.

It is an arithmetic number, because the mean of its divisors is an integer number (56915460).

Almost surely, 2^1232112009 is an apocalyptic number.

It is an amenable number.

1232112009 is a deficient number, since it is larger than the sum of its proper divisors (589182711).

1232112009 is a wasteful number, since it uses less digits than its factorization.

1232112009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10169.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1232112009 is about 35101.4530895802. The cubic root of 1232112009 is about 1072.0541693245.

The spelling of 1232112009 in words is "one billion, two hundred thirty-two million, one hundred twelve thousand, nine".