321146255117 has 2 divisors, whose sum is σ = 321146255118. Its totient is φ = 321146255116.

The previous prime is 321146255099. The next prime is 321146255147. The reversal of 321146255117 is 711552641123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295485739396 + 25660515721 = 543586^2 + 160189^2 .

It is a cyclic number.

It is not a de Polignac number, because 321146255117 - 2⁸ = 321146254861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321146255147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160573127558 + 160573127559.

It is an arithmetic number, because the mean of its divisors is an integer number (160573127559).

Almost surely, 2^321146255117 is an apocalyptic number.

It is an amenable number.

321146255117 is a deficient number, since it is larger than the sum of its proper divisors (1).

321146255117 is an equidigital number, since it uses as much as digits as its factorization.

321146255117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 38.

The spelling of 321146255117 in words is "three hundred twenty-one billion, one hundred forty-six million, two hundred fifty-five thousand, one hundred seventeen".