240242430431 has 16 divisors (see below), whose sum is σ = 255103136640. Its totient is φ = 225870274560.

The previous prime is 240242430401. The next prime is 240242430469. The reversal of 240242430431 is 134034242042.

It is a cyclic number.

It is not a de Polignac number, because 240242430431 - 2⁶ = 240242430367 is a prime.

It is a super-2 number, since 2×240242430431² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240242430394 and 240242430403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240242430401) 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, 178850 + ... + 715871.

It is an arithmetic number, because the mean of its divisors is an integer number (15943946040).

Almost surely, 2^240242430431 is an apocalyptic number.

240242430431 is a deficient number, since it is larger than the sum of its proper divisors (14860706209).

240242430431 is a wasteful number, since it uses less digits than its factorization.

240242430431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894994.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 240242430431 its reverse (134034242042), we get a palindrome (374276672473).

The spelling of 240242430431 in words is "two hundred forty billion, two hundred forty-two million, four hundred thirty thousand, four hundred thirty-one".