20331373 has 2 divisors, whose sum is σ = 20331374. Its totient is φ = 20331372.

The previous prime is 20331329. The next prime is 20331403. The reversal of 20331373 is 37313302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20088324 + 243049 = 4482^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 20331373 - 2¹³ = 20323181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20331313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165686 + 10165687.

It is an arithmetic number, because the mean of its divisors is an integer number (10165687).

Almost surely, 2^20331373 is an apocalyptic number.

It is an amenable number.

20331373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331373 is an equidigital number, since it uses as much as digits as its factorization.

20331373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 22.

The square root of 20331373 is about 4509.0323795688. The cubic root of 20331373 is about 272.9326986393.

Adding to 20331373 its reverse (37313302), we get a palindrome (57644675).

The spelling of 20331373 in words is "twenty million, three hundred thirty-one thousand, three hundred seventy-three".