12231440342 has 32 divisors (see below), whose sum is σ = 21984549120. Its totient is φ = 5038117920.

The previous prime is 12231440339. The next prime is 12231440357. The reversal of 12231440342 is 24304413221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 626513 + ... + 645740.

It is an arithmetic number, because the mean of its divisors is an integer number (687017160).

Almost surely, 2^12231440342 is an apocalyptic number.

12231440342 is a deficient number, since it is larger than the sum of its proper divisors (9753108778).

12231440342 is a wasteful number, since it uses less digits than its factorization.

12231440342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272308.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12231440342 its reverse (24304413221), we get a palindrome (36535853563).

The spelling of 12231440342 in words is "twelve billion, two hundred thirty-one million, four hundred forty thousand, three hundred forty-two".