1240002434431 has 8 divisors (see below), whose sum is σ = 1268863073280. Its totient is φ = 1211142858072.

The previous prime is 1240002434417. The next prime is 1240002434443. The reversal of 1240002434431 is 1344342000421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240002434431 - 2⁷ = 1240002434303 is a prime.

It is a super-2 number, since 2×1240002434431² (a number of 25 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 1240002434431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240002434401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2404386 + ... + 2874208.

It is an arithmetic number, because the mean of its divisors is an integer number (158607884160).

Almost surely, 2^{1240002434431} is an apocalyptic number.

1240002434431 is a deficient number, since it is larger than the sum of its proper divisors (28860638849).

1240002434431 is an equidigital number, since it uses as much as digits as its factorization.

1240002434431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531245.

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

Adding to 1240002434431 its reverse (1344342000421), we get a palindrome (2584344434852).

The spelling of 1240002434431 in words is "one trillion, two hundred forty billion, two million, four hundred thirty-four thousand, four hundred thirty-one".