12440431334 has 16 divisors (see below), whose sum is σ = 18832035600. Its totient is φ = 6163263264.

The previous prime is 12440431313. The next prime is 12440431349. The reversal of 12440431334 is 43313404421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12440431297 and 12440431306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97544 + ... + 185460.

It is an arithmetic number, because the mean of its divisors is an integer number (1177002225).

Almost surely, 2^12440431334 is an apocalyptic number.

12440431334 is a deficient number, since it is larger than the sum of its proper divisors (6391604266).

12440431334 is a wasteful number, since it uses less digits than its factorization.

12440431334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88567.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 12440431334 its reverse (43313404421), we get a palindrome (55753835755).

The spelling of 12440431334 in words is "twelve billion, four hundred forty million, four hundred thirty-one thousand, three hundred thirty-four".