321020123147 has 2 divisors, whose sum is σ = 321020123148. Its totient is φ = 321020123146.

The previous prime is 321020123143. The next prime is 321020123153. The reversal of 321020123147 is 741321020123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321020123147 - 2² = 321020123143 is a prime.

It is not a weakly prime, because it can be changed into another prime (321020123143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160510061573 + 160510061574.

It is an arithmetic number, because the mean of its divisors is an integer number (160510061574).

Almost surely, 2^321020123147 is an apocalyptic number.

321020123147 is a deficient number, since it is larger than the sum of its proper divisors (1).

321020123147 is an equidigital number, since it uses as much as digits as its factorization.

321020123147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 321020123147 in words is "three hundred twenty-one billion, twenty million, one hundred twenty-three thousand, one hundred forty-seven".