231124991999 has 16 divisors (see below), whose sum is σ = 254945291136. Its totient is φ = 207785541600.

The previous prime is 231124991963. The next prime is 231124992001. The reversal of 231124991999 is 999199421132.

It is not a de Polignac number, because 231124991999 - 2¹² = 231124987903 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 (231124991299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47264 + ... + 681530.

It is an arithmetic number, because the mean of its divisors is an integer number (15934080696).

Almost surely, 2^231124991999 is an apocalyptic number.

231124991999 is a deficient number, since it is larger than the sum of its proper divisors (23820299137).

231124991999 is a wasteful number, since it uses less digits than its factorization.

231124991999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634646.

The product of its digits is 2834352, while the sum is 59.

The spelling of 231124991999 in words is "two hundred thirty-one billion, one hundred twenty-four million, nine hundred ninety-one thousand, nine hundred ninety-nine".