231545545343045 has 4 divisors (see below), whose sum is σ = 277854654411660. Its totient is φ = 185236436274432.

The previous prime is 231545545343017. The next prime is 231545545343059. The reversal of 231545545343045 is 540343545545132.

231545545343045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 104586149667169 + 126959395675876 = 10226737^2 + 11267626^2 .

It is a cyclic number.

It is not a de Polignac number, because 231545545343045 - 2¹⁰ = 231545545342021 is a prime.

It is a super-2 number, since 2×231545545343045² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23154554534300 + ... + 23154554534309.

It is an arithmetic number, because the mean of its divisors is an integer number (69463663602915).

Almost surely, 2^{231545545343045} is an apocalyptic number.

It is an amenable number.

231545545343045 is a deficient number, since it is larger than the sum of its proper divisors (46309109068615).

231545545343045 is an equidigital number, since it uses as much as digits as its factorization.

231545545343045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46309109068614.

The product of its (nonzero) digits is 43200000, while the sum is 53.

The spelling of 231545545343045 in words is "two hundred thirty-one trillion, five hundred forty-five billion, five hundred forty-five million, three hundred forty-three thousand, forty-five".