240040331431 has 2 divisors, whose sum is σ = 240040331432. Its totient is φ = 240040331430.

The previous prime is 240040331423. The next prime is 240040331441. The reversal of 240040331431 is 134133040042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240040331431 - 2³ = 240040331423 is a prime.

It is a super-2 number, since 2×240040331431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240040331396 and 240040331405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240040331411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120020165715 + 120020165716.

It is an arithmetic number, because the mean of its divisors is an integer number (120020165716).

Almost surely, 2^240040331431 is an apocalyptic number.

240040331431 is a deficient number, since it is larger than the sum of its proper divisors (1).

240040331431 is an equidigital number, since it uses as much as digits as its factorization.

240040331431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 240040331431 its reverse (134133040042), we get a palindrome (374173371473).

The spelling of 240040331431 in words is "two hundred forty billion, forty million, three hundred thirty-one thousand, four hundred thirty-one".