231121130999 has 8 divisors (see below), whose sum is σ = 266963445648. Its totient is φ = 197750700160.

The previous prime is 231121130993. The next prime is 231121131013. The reversal of 231121130999 is 999031121132.

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 231121130999 - 2⁸ = 231121130743 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 (231121130993) 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, 617970752 + ... + 617971125.

It is an arithmetic number, because the mean of its divisors is an integer number (33370430706).

Almost surely, 2^231121130999 is an apocalyptic number.

231121130999 is a deficient number, since it is larger than the sum of its proper divisors (35842314649).

231121130999 is a wasteful number, since it uses less digits than its factorization.

231121130999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235941905.

The product of its (nonzero) digits is 26244, while the sum is 41.

The spelling of 231121130999 in words is "two hundred thirty-one billion, one hundred twenty-one million, one hundred thirty thousand, nine hundred ninety-nine".