240713731 has 4 divisors (see below), whose sum is σ = 241040200. Its totient is φ = 240387264.

The previous prime is 240713723. The next prime is 240713771. The reversal of 240713731 is 137317042.

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 240713731 - 2³ = 240713723 is a prime.

It is a super-2 number, since 2×240713731² = 115886200583880722, which contains 22 as substring.

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 240713731.

It is not an unprimeable number, because it can be changed into a prime (240713701) 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, 162126 + ... + 163603.

It is an arithmetic number, because the mean of its divisors is an integer number (60260050).

Almost surely, 2^240713731 is an apocalyptic number.

240713731 is a deficient number, since it is larger than the sum of its proper divisors (326469).

240713731 is an equidigital number, since it uses as much as digits as its factorization.

240713731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326468.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 240713731 is about 15514.9518529707. The cubic root of 240713731 is about 622.0619271269.

The spelling of 240713731 in words is "two hundred forty million, seven hundred thirteen thousand, seven hundred thirty-one".