323121023129 has 2 divisors, whose sum is σ = 323121023130. Its totient is φ = 323121023128.

The previous prime is 323121023111. The next prime is 323121023231. The reversal of 323121023129 is 921320121323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187069225225 + 136051797904 = 432515^2 + 368852^2 .

It is a cyclic number.

It is not a de Polignac number, because 323121023129 - 2²⁰ = 323119974553 is a prime.

It is not a weakly prime, because it can be changed into another prime (323121223129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161560511564 + 161560511565.

It is an arithmetic number, because the mean of its divisors is an integer number (161560511565).

Almost surely, 2^323121023129 is an apocalyptic number.

It is an amenable number.

323121023129 is a deficient number, since it is larger than the sum of its proper divisors (1).

323121023129 is an equidigital number, since it uses as much as digits as its factorization.

323121023129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 323121023129 in words is "three hundred twenty-three billion, one hundred twenty-one million, twenty-three thousand, one hundred twenty-nine".