321103481 has 2 divisors, whose sum is σ = 321103482. Its totient is φ = 321103480.

The previous prime is 321103441. The next prime is 321103537. The reversal of 321103481 is 184301123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193210000 + 127893481 = 13900^2 + 11309^2 .

It is an emirp because it is prime and its reverse (184301123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321103481 - 2¹⁸ = 320841337 is a prime.

It is a super-2 number, since 2×321103481² = 206214891020634722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321103441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160551740 + 160551741.

It is an arithmetic number, because the mean of its divisors is an integer number (160551741).

Almost surely, 2^321103481 is an apocalyptic number.

It is an amenable number.

321103481 is a deficient number, since it is larger than the sum of its proper divisors (1).

321103481 is an equidigital number, since it uses as much as digits as its factorization.

321103481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 321103481 is about 17919.3605075628. The cubic root of 321103481 is about 684.7756958242.

The spelling of 321103481 in words is "three hundred twenty-one million, one hundred three thousand, four hundred eighty-one".