321463381 has 2 divisors, whose sum is σ = 321463382. Its totient is φ = 321463380.

The previous prime is 321463367. The next prime is 321463427. The reversal of 321463381 is 183364123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241647025 + 79816356 = 15545^2 + 8934^2 .

It is a cyclic number.

It is not a de Polignac number, because 321463381 - 2²⁵ = 287908949 is a prime.

It is a super-2 number, since 2×321463381² = 206677410647902322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321463301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160731690 + 160731691.

It is an arithmetic number, because the mean of its divisors is an integer number (160731691).

Almost surely, 2^321463381 is an apocalyptic number.

It is an amenable number.

321463381 is a deficient number, since it is larger than the sum of its proper divisors (1).

321463381 is an equidigital number, since it uses as much as digits as its factorization.

321463381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 321463381 is about 17929.3999062992. The cubic root of 321463381 is about 685.0314376322.

The spelling of 321463381 in words is "three hundred twenty-one million, four hundred sixty-three thousand, three hundred eighty-one".