231155153312243 has 4 divisors (see below), whose sum is σ = 231157807091400. Its totient is φ = 231152499533088.

The previous prime is 231155153312221. The next prime is 231155153312263. The reversal of 231155153312243 is 342213351551132.

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 231155153312243 - 2⁸ = 231155153311987 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 231155153312243.

It is not an unprimeable number, because it can be changed into a prime (231155153312263) 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, 1326758918 + ... + 1326933131.

It is an arithmetic number, because the mean of its divisors is an integer number (57789451772850).

Almost surely, 2^{231155153312243} is an apocalyptic number.

231155153312243 is a deficient number, since it is larger than the sum of its proper divisors (2653779157).

231155153312243 is an equidigital number, since it uses as much as digits as its factorization.

231155153312243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653779156.

The product of its digits is 324000, while the sum is 41.

The spelling of 231155153312243 in words is "two hundred thirty-one trillion, one hundred fifty-five billion, one hundred fifty-three million, three hundred twelve thousand, two hundred forty-three".