1231423343452 has 24 divisors (see below), whose sum is σ = 2195600265936. Its totient is φ = 604194611328.

The previous prime is 1231423343399. The next prime is 1231423343483. The reversal of 1231423343452 is 2543433241321.

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, 10646038 + ... + 10761085.

It is an arithmetic number, because the mean of its divisors is an integer number (91483344414).

Almost surely, 2^{1231423343452} is an apocalyptic number.

It is an amenable number.

1231423343452 is a deficient number, since it is larger than the sum of its proper divisors (964176922484).

1231423343452 is a wasteful number, since it uses less digits than its factorization.

1231423343452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21407397 (or 21407395 counting only the distinct ones).

The product of its digits is 207360, while the sum is 37.

Adding to 1231423343452 its reverse (2543433241321), we get a palindrome (3774856584773).

The spelling of 1231423343452 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-three million, three hundred forty-three thousand, four hundred fifty-two".