1231223142443 has 24 divisors (see below), whose sum is σ = 1450566255600. Its totient is φ = 1041889867200.

The previous prime is 1231223142403. The next prime is 1231223142467. The reversal of 1231223142443 is 3442413221321.

It is a happy number.

It is not a de Polignac number, because 1231223142443 - 2¹⁰ = 1231223141419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231223142403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1370780 + ... + 2083622.

It is an arithmetic number, because the mean of its divisors is an integer number (60440260650).

Almost surely, 2^{1231223142443} is an apocalyptic number.

1231223142443 is a deficient number, since it is larger than the sum of its proper divisors (219343113157).

1231223142443 is a wasteful number, since it uses less digits than its factorization.

1231223142443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713307 (or 713300 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

Adding to 1231223142443 its reverse (3442413221321), we get a palindrome (4673636363764).

The spelling of 1231223142443 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-three million, one hundred forty-two thousand, four hundred forty-three".