231332999609 has 2 divisors, whose sum is σ = 231332999610. Its totient is φ = 231332999608.

The previous prime is 231332999549. The next prime is 231332999663. The reversal of 231332999609 is 906999233132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217578401209 + 13754598400 = 466453^2 + 117280^2 .

It is a cyclic number.

It is not a de Polignac number, because 231332999609 - 2²⁴ = 231316222393 is a prime.

It is not a weakly prime, because it can be changed into another prime (231332999509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115666499804 + 115666499805.

It is an arithmetic number, because the mean of its divisors is an integer number (115666499805).

Almost surely, 2^231332999609 is an apocalyptic number.

It is an amenable number.

231332999609 is a deficient number, since it is larger than the sum of its proper divisors (1).

231332999609 is an equidigital number, since it uses as much as digits as its factorization.

231332999609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4251528, while the sum is 56.

The spelling of 231332999609 in words is "two hundred thirty-one billion, three hundred thirty-two million, nine hundred ninety-nine thousand, six hundred nine".