20020331211313 has 2 divisors, whose sum is σ = 20020331211314. Its totient is φ = 20020331211312.

The previous prime is 20020331211253. The next prime is 20020331211367. The reversal of 20020331211313 is 31311213302002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16432913385009 + 3587417826304 = 4053753^2 + 1894048^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020331211313 - 2²¹ = 20020329114161 is a prime.

It is not a weakly prime, because it can be changed into another prime (20020331211913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010165605656 + 10010165605657.

It is an arithmetic number, because the mean of its divisors is an integer number (10010165605657).

Almost surely, 2^{20020331211313} is an apocalyptic number.

It is an amenable number.

20020331211313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020331211313 is an equidigital number, since it uses as much as digits as its factorization.

20020331211313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20020331211313 its reverse (31311213302002), we get a palindrome (51331544513315).

The spelling of 20020331211313 in words is "twenty trillion, twenty billion, three hundred thirty-one million, two hundred eleven thousand, three hundred thirteen".