231143044191 has 8 divisors (see below), whose sum is σ = 309287490864. Its totient is φ = 153546980160.

The previous prime is 231143044177. The next prime is 231143044193. The reversal of 231143044191 is 191440341132.

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

It is not a de Polignac number, because 231143044191 - 2¹⁵ = 231143011423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231143044193) 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, 137094676 + ... + 137096361.

It is an arithmetic number, because the mean of its divisors is an integer number (38660936358).

Almost surely, 2^231143044191 is an apocalyptic number.

231143044191 is a deficient number, since it is larger than the sum of its proper divisors (78144446673).

231143044191 is a wasteful number, since it uses less digits than its factorization.

231143044191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274191321.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 231143044191 in words is "two hundred thirty-one billion, one hundred forty-three million, forty-four thousand, one hundred ninety-one".