1142321431231 has 8 divisors (see below), whose sum is σ = 1149624716400. Its totient is φ = 1135018492608.

The previous prime is 1142321431217. The next prime is 1142321431291. The reversal of 1142321431231 is 1321341232411.

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-1142321431231 is a prime.

It is a super-2 number, since 2×1142321431231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142321431231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142321431211) 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, 11229660 + ... + 11330926.

It is an arithmetic number, because the mean of its divisors is an integer number (143703089550).

Almost surely, 2^{1142321431231} is an apocalyptic number.

1142321431231 is a deficient number, since it is larger than the sum of its proper divisors (7303285169).

1142321431231 is a wasteful number, since it uses less digits than its factorization.

1142321431231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173273.

The product of its digits is 3456, while the sum is 28.

Adding to 1142321431231 its reverse (1321341232411), we get a palindrome (2463662663642).

The spelling of 1142321431231 in words is "one trillion, one hundred forty-two billion, three hundred twenty-one million, four hundred thirty-one thousand, two hundred thirty-one".