12340431342 has 24 divisors (see below), whose sum is σ = 28310402016. Its totient is φ = 3871507776.

The previous prime is 12340431319. The next prime is 12340431347. The reversal of 12340431342 is 24313404321.

12340431342 is a `hidden beast` number, since 1 + 2 + 340 + 4 + 313 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340431347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20163798 + ... + 20164409.

It is an arithmetic number, because the mean of its divisors is an integer number (1179600084).

Almost surely, 2^12340431342 is an apocalyptic number.

12340431342 is an abundant number, since it is smaller than the sum of its proper divisors (15969970674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12340431342 is a wasteful number, since it uses less digits than its factorization.

12340431342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40328232 (or 40328229 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 12340431342 its reverse (24313404321), we get a palindrome (36653835663).

The spelling of 12340431342 in words is "twelve billion, three hundred forty million, four hundred thirty-one thousand, three hundred forty-two".