23013031209 has 32 divisors (see below), whose sum is σ = 35215165440. Its totient is φ = 13095032832.

The previous prime is 23013031207. The next prime is 23013031213. The reversal of 23013031209 is 90213031032.

It is not a de Polignac number, because 23013031209 - 2¹ = 23013031207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23013031207) 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, 6655209 + ... + 6658665.

It is an arithmetic number, because the mean of its divisors is an integer number (1100473920).

Almost surely, 2^23013031209 is an apocalyptic number.

It is an amenable number.

23013031209 is a deficient number, since it is larger than the sum of its proper divisors (12202134231).

23013031209 is a wasteful number, since it uses less digits than its factorization.

23013031209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709.

The product of its (nonzero) digits is 972, while the sum is 24.

The spelling of 23013031209 in words is "twenty-three billion, thirteen million, thirty-one thousand, two hundred nine".