240002431 has 4 divisors (see below), whose sum is σ = 240063264. Its totient is φ = 239941600.

The previous prime is 240002429. The next prime is 240002443. The reversal of 240002431 is 134200042.

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 240002431 - 2¹ = 240002429 is a prime.

It is a super-2 number, since 2×240002431² = 115202333771819522, which 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 (240002131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24055 + ... + 32536.

It is an arithmetic number, because the mean of its divisors is an integer number (60015816).

Almost surely, 2^240002431 is an apocalyptic number.

240002431 is a deficient number, since it is larger than the sum of its proper divisors (60833).

240002431 is an equidigital number, since it uses as much as digits as its factorization.

240002431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60832.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 240002431 is about 15492.0118448186. The cubic root of 240002431 is about 621.4485994287.

Adding to 240002431 its reverse (134200042), we get a palindrome (374202473).

The spelling of 240002431 in words is "two hundred forty million, two thousand, four hundred thirty-one".