321201113 has 2 divisors, whose sum is σ = 321201114. Its totient is φ = 321201112.

The previous prime is 321201073. The next prime is 321201131. The reversal of 321201113 is 311102123.

Together with next prime (321201131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255136729 + 66064384 = 15973^2 + 8128^2 .

It is an emirp because it is prime and its reverse (311102123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321201113 - 2¹⁴ = 321184729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (321201143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160600556 + 160600557.

It is an arithmetic number, because the mean of its divisors is an integer number (160600557).

Almost surely, 2^321201113 is an apocalyptic number.

It is an amenable number.

321201113 is a deficient number, since it is larger than the sum of its proper divisors (1).

321201113 is an equidigital number, since it uses as much as digits as its factorization.

321201113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 321201113 is about 17922.0845048783. The cubic root of 321201113 is about 684.8450911541.

Adding to 321201113 its reverse (311102123), we get a palindrome (632303236).

It can be divided in two parts, 32120 and 1113, that added together give a palindrome (33233).

The spelling of 321201113 in words is "three hundred twenty-one million, two hundred one thousand, one hundred thirteen".