20332313 has 2 divisors, whose sum is σ = 20332314. Its totient is φ = 20332312.

The previous prime is 20332297. The next prime is 20332327. The reversal of 20332313 is 31323302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16752649 + 3579664 = 4093^2 + 1892^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332313 - 2⁴ = 20332297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20332291 and 20332300.

It is not a weakly prime, because it can be changed into another prime (20332343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166156 + 10166157.

It is an arithmetic number, because the mean of its divisors is an integer number (10166157).

Almost surely, 2^20332313 is an apocalyptic number.

It is an amenable number.

20332313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332313 is an equidigital number, since it uses as much as digits as its factorization.

20332313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 20332313 is about 4509.1366135880. The cubic root of 20332313 is about 272.9369048282.

Adding to 20332313 its reverse (31323302), we get a palindrome (51655615).

The spelling of 20332313 in words is "twenty million, three hundred thirty-two thousand, three hundred thirteen".