321020234231 has 2 divisors, whose sum is σ = 321020234232. Its totient is φ = 321020234230.

The previous prime is 321020234189. The next prime is 321020234233. The reversal of 321020234231 is 132432020123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321020234231 - 2¹⁸ = 321019972087 is a prime.

It is a super-2 number, since 2×321020234231² (a number of 24 digits) contains 22 as substring.

Together with 321020234233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 321020234197 and 321020234206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321020234233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160510117115 + 160510117116.

It is an arithmetic number, because the mean of its divisors is an integer number (160510117116).

Almost surely, 2^321020234231 is an apocalyptic number.

321020234231 is a deficient number, since it is larger than the sum of its proper divisors (1).

321020234231 is an equidigital number, since it uses as much as digits as its factorization.

321020234231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 321020234231 its reverse (132432020123), we get a palindrome (453452254354).

The spelling of 321020234231 in words is "three hundred twenty-one billion, twenty million, two hundred thirty-four thousand, two hundred thirty-one".