231505365541045 has 32 divisors (see below), whose sum is σ = 294896992336128. Its totient is φ = 173866373096448.

The previous prime is 231505365541019. The next prime is 231505365541067. The reversal of 231505365541045 is 540145563505132.

It is a cyclic number.

It is not a de Polignac number, because 231505365541045 - 2¹⁷ = 231505365409973 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 231505365541045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97147264 + ... + 99501766.

It is an arithmetic number, because the mean of its divisors is an integer number (9215531010504).

Almost surely, 2^{231505365541045} is an apocalyptic number.

It is an amenable number.

231505365541045 is a deficient number, since it is larger than the sum of its proper divisors (63391626795083).

231505365541045 is a wasteful number, since it uses less digits than its factorization.

231505365541045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357469.

The product of its (nonzero) digits is 5400000, while the sum is 49.

The spelling of 231505365541045 in words is "two hundred thirty-one trillion, five hundred five billion, three hundred sixty-five million, five hundred forty-one thousand, forty-five".