1231422143999 has 8 divisors (see below), whose sum is σ = 1261533261408. Its totient is φ = 1201314666240.

The previous prime is 1231422143981. The next prime is 1231422144023. The reversal of 1231422143999 is 9993412241321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231422143999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231422143969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218627 + ... + 1584500.

It is an arithmetic number, because the mean of its divisors is an integer number (157691657676).

Almost surely, 2^{1231422143999} is an apocalyptic number.

1231422143999 is a deficient number, since it is larger than the sum of its proper divisors (30111117409).

1231422143999 is a wasteful number, since it uses less digits than its factorization.

1231422143999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819825.

The product of its digits is 839808, while the sum is 50.

The spelling of 1231422143999 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-two million, one hundred forty-three thousand, nine hundred ninety-nine".