231751456159 has 4 divisors (see below), whose sum is σ = 243948901240. Its totient is φ = 219554011080.

The previous prime is 231751456091. The next prime is 231751456169. The reversal of 231751456159 is 951654157132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231751456159 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 (231751456169) 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, 6098722512 + ... + 6098722549.

It is an arithmetic number, because the mean of its divisors is an integer number (60987225310).

Almost surely, 2^231751456159 is an apocalyptic number.

231751456159 is a deficient number, since it is larger than the sum of its proper divisors (12197445081).

231751456159 is a wasteful number, since it uses less digits than its factorization.

231751456159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12197445080.

The product of its digits is 1134000, while the sum is 49.

The spelling of 231751456159 in words is "two hundred thirty-one billion, seven hundred fifty-one million, four hundred fifty-six thousand, one hundred fifty-nine".