231723153943 has 4 divisors (see below), whose sum is σ = 232390944360. Its totient is φ = 231055363528.

The previous prime is 231723153941. The next prime is 231723153967. The reversal of 231723153943 is 349351327132.

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

It is a cyclic number.

It is not a de Polignac number, because 231723153943 - 2¹ = 231723153941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231723153943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231723153941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333894688 + ... + 333895381.

It is an arithmetic number, because the mean of its divisors is an integer number (58097736090).

Almost surely, 2^231723153943 is an apocalyptic number.

231723153943 is a deficient number, since it is larger than the sum of its proper divisors (667790417).

231723153943 is an equidigital number, since it uses as much as digits as its factorization.

231723153943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667790416.

The product of its digits is 408240, while the sum is 43.

The spelling of 231723153943 in words is "two hundred thirty-one billion, seven hundred twenty-three million, one hundred fifty-three thousand, nine hundred forty-three".