323121000002131 has 2 divisors, whose sum is σ = 323121000002132. Its totient is φ = 323121000002130.

The previous prime is 323121000002083. The next prime is 323121000002159. The reversal of 323121000002131 is 131200000121323.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 323121000002131 - 2¹⁵ = 323120999969363 is a prime.

It is a super-2 number, since 2×323121000002131² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 323121000002099 and 323121000002108.

It is not a weakly prime, because it can be changed into another prime (323121000002191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161560500001065 + 161560500001066.

It is an arithmetic number, because the mean of its divisors is an integer number (161560500001066).

Almost surely, 2^{323121000002131} is an apocalyptic number.

323121000002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

323121000002131 is an equidigital number, since it uses as much as digits as its factorization.

323121000002131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 323121000002131 its reverse (131200000121323), we get a palindrome (454321000123454).

The spelling of 323121000002131 in words is "three hundred twenty-three trillion, one hundred twenty-one billion, two thousand, one hundred thirty-one".