321231133031 has 2 divisors, whose sum is σ = 321231133032. Its totient is φ = 321231133030.

The previous prime is 321231132923. The next prime is 321231133033. The reversal of 321231133031 is 130331132123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321231133031 - 2²² = 321226938727 is a prime.

It is a super-2 number, since 2×321231133031² (a number of 24 digits) contains 22 as substring.

Together with 321231133033, 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 = 321231132988 and 321231133006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321231133033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160615566515 + 160615566516.

It is an arithmetic number, because the mean of its divisors is an integer number (160615566516).

Almost surely, 2^321231133031 is an apocalyptic number.

321231133031 is a deficient number, since it is larger than the sum of its proper divisors (1).

321231133031 is an equidigital number, since it uses as much as digits as its factorization.

321231133031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 321231133031 its reverse (130331132123), we get a palindrome (451562265154).

The spelling of 321231133031 in words is "three hundred twenty-one billion, two hundred thirty-one million, one hundred thirty-three thousand, thirty-one".