1231412142320 has 20 divisors (see below), whose sum is σ = 2863033231080. Its totient is φ = 492564856896.

The previous prime is 1231412142319. The next prime is 1231412142383. The reversal of 1231412142320 is 232412141321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1231412142320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7696325810 + ... + 7696325969.

It is an arithmetic number, because the mean of its divisors is an integer number (143151661554).

Almost surely, 2^{1231412142320} is an apocalyptic number.

1231412142320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231412142320 is an abundant number, since it is smaller than the sum of its proper divisors (1631621088760).

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

1231412142320 is a wasteful number, since it uses less digits than its factorization.

1231412142320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15392651792 (or 15392651786 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1231412142320 its reverse (232412141321), we get a palindrome (1463824283641).

Subtracting from 1231412142320 its reverse (232412141321), we obtain a palindrome (999000000999).

The spelling of 1231412142320 in words is "one trillion, two hundred thirty-one billion, four hundred twelve million, one hundred forty-two thousand, three hundred twenty".