1232143142321 has 16 divisors (see below), whose sum is σ = 1517337462144. Its totient is φ = 974333746944.

The previous prime is 1232143142309. The next prime is 1232143142339. The reversal of 1232143142321 is 1232413412321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1232143142321 - 2²⁶ = 1232076033457 is a prime.

It is a super-2 number, since 2×1232143142321² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1232143142371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3648095 + ... + 3971508.

It is an arithmetic number, because the mean of its divisors is an integer number (94833591384).

Almost surely, 2^{1232143142321} is an apocalyptic number.

It is an amenable number.

1232143142321 is a deficient number, since it is larger than the sum of its proper divisors (285194319823).

1232143142321 is a wasteful number, since it uses less digits than its factorization.

1232143142321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7621400.

The product of its digits is 6912, while the sum is 29.

Adding to 1232143142321 its reverse (1232413412321), we get a palindrome (2464556554642).

The spelling of 1232143142321 in words is "one trillion, two hundred thirty-two billion, one hundred forty-three million, one hundred forty-two thousand, three hundred twenty-one".