23431202324209 has 2 divisors, whose sum is σ = 23431202324210. Its totient is φ = 23431202324208.

The previous prime is 23431202324083. The next prime is 23431202324227. The reversal of 23431202324209 is 90242320213432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18746994848400 + 4684207475809 = 4329780^2 + 2164303^2 .

It is a cyclic number.

It is not a de Polignac number, because 23431202324209 - 2¹³ = 23431202316017 is a prime.

It is not a weakly prime, because it can be changed into another prime (23431202324909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11715601162104 + 11715601162105.

It is an arithmetic number, because the mean of its divisors is an integer number (11715601162105).

Almost surely, 2^{23431202324209} is an apocalyptic number.

It is an amenable number.

23431202324209 is a deficient number, since it is larger than the sum of its proper divisors (1).

23431202324209 is an equidigital number, since it uses as much as digits as its factorization.

23431202324209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 23431202324209 in words is "twenty-three trillion, four hundred thirty-one billion, two hundred two million, three hundred twenty-four thousand, two hundred nine".