240131143 has 6 divisors (see below), whose sum is σ = 274482456. Its totient is φ = 205791552.

The previous prime is 240131141. The next prime is 240131153. The reversal of 240131143 is 341131042.

It is not a de Polignac number, because 240131143 - 2¹ = 240131141 is a prime.

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 240131143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240131141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38071 + ... + 43927.

It is an arithmetic number, because the mean of its divisors is an integer number (45747076).

Almost surely, 2^240131143 is an apocalyptic number.

240131143 is a deficient number, since it is larger than the sum of its proper divisors (34351313).

240131143 is an frugal number, since it uses more digits than its factorization.

240131143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11721 (or 5864 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 240131143 is about 15496.1654289053. The cubic root of 240131143 is about 621.5596727445.

Adding to 240131143 its reverse (341131042), we get a palindrome (581262185).

The spelling of 240131143 in words is "two hundred forty million, one hundred thirty-one thousand, one hundred forty-three".