31233443009 has 16 divisors (see below), whose sum is σ = 32896824192. Its totient is φ = 29596752768.

The previous prime is 31233442993. The next prime is 31233443011. The reversal of 31233443009 is 90034433213.

It is a cyclic number.

It is not a de Polignac number, because 31233443009 - 2⁴ = 31233442993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31233443039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1112189 + ... + 1139925.

It is an arithmetic number, because the mean of its divisors is an integer number (2056051512).

Almost surely, 2^31233443009 is an apocalyptic number.

It is an amenable number.

31233443009 is a deficient number, since it is larger than the sum of its proper divisors (1663381183).

31233443009 is a wasteful number, since it uses less digits than its factorization.

31233443009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28216.

The product of its (nonzero) digits is 23328, while the sum is 32.

The spelling of 31233443009 in words is "thirty-one billion, two hundred thirty-three million, four hundred forty-three thousand, nine".