240991528423 has 4 divisors (see below), whose sum is σ = 241048196568. Its totient is φ = 240934860280.

The previous prime is 240991528411. The next prime is 240991528433. The reversal of 240991528423 is 324825199042.

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 240991528423 - 2⁵ = 240991528391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240991528433) 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, 28327693 + ... + 28336198.

It is an arithmetic number, because the mean of its divisors is an integer number (60262049142).

Almost surely, 2^240991528423 is an apocalyptic number.

240991528423 is a deficient number, since it is larger than the sum of its proper divisors (56668145).

240991528423 is an equidigital number, since it uses as much as digits as its factorization.

240991528423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56668144.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 240991528423 in words is "two hundred forty billion, nine hundred ninety-one million, five hundred twenty-eight thousand, four hundred twenty-three".