240304128231 has 4 divisors (see below), whose sum is σ = 320405504312. Its totient is φ = 160202752152.

The previous prime is 240304128223. The next prime is 240304128283. The reversal of 240304128231 is 132821403042.

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

It is not a de Polignac number, because 240304128231 - 2³ = 240304128223 is a prime.

It is a super-2 number, since 2×240304128231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240304128331) 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, 40050688036 + ... + 40050688041.

It is an arithmetic number, because the mean of its divisors is an integer number (80101376078).

Almost surely, 2^240304128231 is an apocalyptic number.

240304128231 is a deficient number, since it is larger than the sum of its proper divisors (80101376081).

240304128231 is an equidigital number, since it uses as much as digits as its factorization.

240304128231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80101376080.

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 240304128231 in words is "two hundred forty billion, three hundred four million, one hundred twenty-eight thousand, two hundred thirty-one".