231223211999 has 8 divisors (see below), whose sum is σ = 253091738592. Its totient is φ = 209937846240.

The previous prime is 231223211983. The next prime is 231223212007. The reversal of 231223211999 is 999112322132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231223211999 - 2⁴ = 231223211983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231223211909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145789379 + ... + 145790964.

It is an arithmetic number, because the mean of its divisors is an integer number (31636467324).

Almost surely, 2^231223211999 is an apocalyptic number.

231223211999 is a deficient number, since it is larger than the sum of its proper divisors (21868526593).

231223211999 is a wasteful number, since it uses less digits than its factorization.

231223211999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291580417.

The product of its digits is 104976, while the sum is 44.

The spelling of 231223211999 in words is "two hundred thirty-one billion, two hundred twenty-three million, two hundred eleven thousand, nine hundred ninety-nine".