232131311023321 has 4 divisors (see below), whose sum is σ = 232418247131700. Its totient is φ = 231844374914944.

The previous prime is 232131311023303. The next prime is 232131311023333. The reversal of 232131311023321 is 123320113131232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 172986151856400 + 59145159166921 = 13152420^2 + 7690589^2 .

It is a cyclic number.

It is not a de Polignac number, because 232131311023321 - 2³⁷ = 231993872069849 is a prime.

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 232131311023321.

It is not an unprimeable number, because it can be changed into a prime (232131311023351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143468052976 + ... + 143468054593.

It is an arithmetic number, because the mean of its divisors is an integer number (58104561782925).

Almost surely, 2^{232131311023321} is an apocalyptic number.

It is an amenable number.

232131311023321 is a deficient number, since it is larger than the sum of its proper divisors (286936108379).

232131311023321 is an equidigital number, since it uses as much as digits as its factorization.

232131311023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286936108378.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 232131311023321 its reverse (123320113131232), we get a palindrome (355451424154553).

The spelling of 232131311023321 in words is "two hundred thirty-two trillion, one hundred thirty-one billion, three hundred eleven million, twenty-three thousand, three hundred twenty-one".