231334213321 has 2 divisors, whose sum is σ = 231334213322. Its totient is φ = 231334213320.

The previous prime is 231334213303. The next prime is 231334213343. The reversal of 231334213321 is 123312433132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230553625600 + 780587721 = 480160^2 + 27939^2 .

It is a cyclic number.

It is not a de Polignac number, because 231334213321 - 2⁵ = 231334213289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231334213321.

It is not a weakly prime, because it can be changed into another prime (231334213301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115667106660 + 115667106661.

It is an arithmetic number, because the mean of its divisors is an integer number (115667106661).

Almost surely, 2^231334213321 is an apocalyptic number.

It is an amenable number.

231334213321 is a deficient number, since it is larger than the sum of its proper divisors (1).

231334213321 is an equidigital number, since it uses as much as digits as its factorization.

231334213321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 28.

Adding to 231334213321 its reverse (123312433132), we get a palindrome (354646646453).

The spelling of 231334213321 in words is "two hundred thirty-one billion, three hundred thirty-four million, two hundred thirteen thousand, three hundred twenty-one".