321501113 has 2 divisors, whose sum is σ = 321501114. Its totient is φ = 321501112.

The previous prime is 321501101. The next prime is 321501149. The reversal of 321501113 is 311105123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201554809 + 119946304 = 14197^2 + 10952^2 .

It is a cyclic number.

It is not a de Polignac number, because 321501113 - 2⁴ = 321501097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321501091 and 321501100.

It is not a weakly prime, because it can be changed into another prime (321503113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160750556 + 160750557.

It is an arithmetic number, because the mean of its divisors is an integer number (160750557).

Almost surely, 2^321501113 is an apocalyptic number.

It is an amenable number.

321501113 is a deficient number, since it is larger than the sum of its proper divisors (1).

321501113 is an equidigital number, since it uses as much as digits as its factorization.

321501113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 321501113 is about 17930.4521136529. The cubic root of 321501113 is about 685.0582386061.

Adding to 321501113 its reverse (311105123), we get a palindrome (632606236).

The spelling of 321501113 in words is "three hundred twenty-one million, five hundred one thousand, one hundred thirteen".