1231323322042 has 96 divisors (see below), whose sum is σ = 2160972253440. Its totient is φ = 524885961600.

The previous prime is 1231323322039. The next prime is 1231323322043. The reversal of 1231323322042 is 2402233231321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231323322042.

It is not an unprimeable number, because it can be changed into a prime (1231323322043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54609823 + ... + 54632365.

It is an arithmetic number, because the mean of its divisors is an integer number (22510127640).

Almost surely, 2^{1231323322042} is an apocalyptic number.

1231323322042 is a deficient number, since it is larger than the sum of its proper divisors (929648931398).

1231323322042 is a wasteful number, since it uses less digits than its factorization.

1231323322042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22820 (or 22809 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 1231323322042 its reverse (2402233231321), we get a palindrome (3633556553363).

The spelling of 1231323322042 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-three million, three hundred twenty-two thousand, forty-two".