240323543131 has 4 divisors (see below), whose sum is σ = 274655477872. Its totient is φ = 205991608392.

The previous prime is 240323543113. The next prime is 240323543137. The reversal of 240323543131 is 131345323042.

It is a happy number.

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 240323543131 - 2¹⁷ = 240323412059 is a prime.

It is a super-2 number, since 2×240323543131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240323543093 and 240323543102.

It is not an unprimeable number, because it can be changed into a prime (240323543137) 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, 17165967360 + ... + 17165967373.

It is an arithmetic number, because the mean of its divisors is an integer number (68663869468).

Almost surely, 2^240323543131 is an apocalyptic number.

240323543131 is a deficient number, since it is larger than the sum of its proper divisors (34331934741).

240323543131 is an equidigital number, since it uses as much as digits as its factorization.

240323543131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34331934740.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 240323543131 its reverse (131345323042), we get a palindrome (371668866173).

The spelling of 240323543131 in words is "two hundred forty billion, three hundred twenty-three million, five hundred forty-three thousand, one hundred thirty-one".