240320143 has 16 divisors (see below), whose sum is σ = 298672704. Its totient is φ = 188628480.

The previous prime is 240320141. The next prime is 240320149. The reversal of 240320143 is 341023042.

It is a cyclic number.

It is not a de Polignac number, because 240320143 - 2¹ = 240320141 is a prime.

It is a super-2 number, since 2×240320143² = 115507542263080898, 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 240320143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240320141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22888 + ... + 31693.

It is an arithmetic number, because the mean of its divisors is an integer number (18667044).

Almost surely, 2^240320143 is an apocalyptic number.

240320143 is a deficient number, since it is larger than the sum of its proper divisors (58352561).

240320143 is a wasteful number, since it uses less digits than its factorization.

240320143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54642.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 240320143 is about 15502.2625122916. The cubic root of 240320143 is about 621.7227002883.

Adding to 240320143 its reverse (341023042), we get a palindrome (581343185).

The spelling of 240320143 in words is "two hundred forty million, three hundred twenty thousand, one hundred forty-three".