320121413 has 2 divisors, whose sum is σ = 320121414. Its totient is φ = 320121412.

The previous prime is 320121391. The next prime is 320121457. The reversal of 320121413 is 314121023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275792449 + 44328964 = 16607^2 + 6658^2 .

It is an emirp because it is prime and its reverse (314121023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320121413 - 2⁶ = 320121349 is a prime.

It is a super-2 number, since 2×320121413² = 204955438122233138, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320121391 and 320121400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320121313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160060706 + 160060707.

It is an arithmetic number, because the mean of its divisors is an integer number (160060707).

Almost surely, 2^320121413 is an apocalyptic number.

It is an amenable number.

320121413 is a deficient number, since it is larger than the sum of its proper divisors (1).

320121413 is an equidigital number, since it uses as much as digits as its factorization.

320121413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 320121413 is about 17891.9370946804. The cubic root of 320121413 is about 684.0768732781.

Adding to 320121413 its reverse (314121023), we get a palindrome (634242436).

The spelling of 320121413 in words is "three hundred twenty million, one hundred twenty-one thousand, four hundred thirteen".