231669485999 has 4 divisors (see below), whose sum is σ = 264765126864. Its totient is φ = 198573845136.

The previous prime is 231669485969. The next prime is 231669486001. The reversal of 231669485999 is 999584966132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231669485999 - 2¹² = 231669481903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231669485959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16547820422 + ... + 16547820435.

It is an arithmetic number, because the mean of its divisors is an integer number (66191281716).

Almost surely, 2^231669485999 is an apocalyptic number.

231669485999 is a deficient number, since it is larger than the sum of its proper divisors (33095640865).

231669485999 is an equidigital number, since it uses as much as digits as its factorization.

231669485999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33095640864.

The product of its digits is 226748160, while the sum is 71.

The spelling of 231669485999 in words is "two hundred thirty-one billion, six hundred sixty-nine million, four hundred eighty-five thousand, nine hundred ninety-nine".