240342212431 has 16 divisors (see below), whose sum is σ = 243450637056. Its totient is φ = 237258000000.

The previous prime is 240342212423. The next prime is 240342212449. The reversal of 240342212431 is 134212243042.

It is a cyclic number.

It is not a de Polignac number, because 240342212431 - 2³ = 240342212423 is a prime.

It is a super-2 number, since 2×240342212431² (a number of 24 digits) 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 240342212431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240342215431) 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, 17861256 + ... + 17874706.

It is an arithmetic number, because the mean of its divisors is an integer number (15215664816).

Almost surely, 2^240342212431 is an apocalyptic number.

240342212431 is a deficient number, since it is larger than the sum of its proper divisors (3108424625).

240342212431 is a wasteful number, since it uses less digits than its factorization.

240342212431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14334.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 240342212431 its reverse (134212243042), we get a palindrome (374554455473).

The spelling of 240342212431 in words is "two hundred forty billion, three hundred forty-two million, two hundred twelve thousand, four hundred thirty-one".