1223031443142 has 16 divisors (see below), whose sum is σ = 2446341618240. Its totient is φ = 407630692392.

The previous prime is 1223031443141. The next prime is 1223031443149. The reversal of 1223031443142 is 2413441303221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223031443141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11556768 + ... + 11662115.

It is an arithmetic number, because the mean of its divisors is an integer number (152896351140).

Almost surely, 2^{1223031443142} is an apocalyptic number.

1223031443142 is an abundant number, since it is smaller than the sum of its proper divisors (1223310175098).

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

1223031443142 is a wasteful number, since it uses less digits than its factorization.

1223031443142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23227667.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 1223031443142 its reverse (2413441303221), we get a palindrome (3636472746363).

The spelling of 1223031443142 in words is "one trillion, two hundred twenty-three billion, thirty-one million, four hundred forty-three thousand, one hundred forty-two".