231032312231321 has 4 divisors (see below), whose sum is σ = 231032390300544. Its totient is φ = 231032234162100.

The previous prime is 231032312231317. The next prime is 231032312231389. The reversal of 231032312231321 is 123132213230132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231032312231321 - 2² = 231032312231317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231032312231621) 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, 34413245 + ... + 40575066.

It is an arithmetic number, because the mean of its divisors is an integer number (57758097575136).

Almost surely, 2^{231032312231321} is an apocalyptic number.

It is an amenable number.

231032312231321 is a deficient number, since it is larger than the sum of its proper divisors (78069223).

231032312231321 is an equidigital number, since it uses as much as digits as its factorization.

231032312231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78069222.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 231032312231321 its reverse (123132213230132), we get a palindrome (354164525461453).

The spelling of 231032312231321 in words is "two hundred thirty-one trillion, thirty-two billion, three hundred twelve million, two hundred thirty-one thousand, three hundred twenty-one".