240245520431 has 4 divisors (see below), whose sum is σ = 274566309072. Its totient is φ = 205924731792.

The previous prime is 240245520379. The next prime is 240245520451. The reversal of 240245520431 is 134025542042.

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 240245520431 - 2³⁴ = 223065651247 is a prime.

It is a super-2 number, since 2×240245520431² (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 (240245520451) 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, 17160394310 + ... + 17160394323.

It is an arithmetic number, because the mean of its divisors is an integer number (68641577268).

Almost surely, 2^240245520431 is an apocalyptic number.

240245520431 is a deficient number, since it is larger than the sum of its proper divisors (34320788641).

240245520431 is an equidigital number, since it uses as much as digits as its factorization.

240245520431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34320788640.

The product of its (nonzero) digits is 38400, while the sum is 32.

It can be divided in two parts, 24024 and 5520431, that added together give a palindrome (5544455).

The spelling of 240245520431 in words is "two hundred forty billion, two hundred forty-five million, five hundred twenty thousand, four hundred thirty-one".