20020323203131 has 2 divisors, whose sum is σ = 20020323203132. Its totient is φ = 20020323203130.

The previous prime is 20020323203071. The next prime is 20020323203227. The reversal of 20020323203131 is 13130232302002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20020323203131 - 2¹⁵ = 20020323170363 is a prime.

It is a super-2 number, since 2×20020323203131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20020323263131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010161601565 + 10010161601566.

It is an arithmetic number, because the mean of its divisors is an integer number (10010161601566).

Almost surely, 2^{20020323203131} is an apocalyptic number.

20020323203131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020323203131 is an equidigital number, since it uses as much as digits as its factorization.

20020323203131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20020323203131 its reverse (13130232302002), we get a palindrome (33150555505133).

The spelling of 20020323203131 in words is "twenty trillion, twenty billion, three hundred twenty-three million, two hundred three thousand, one hundred thirty-one".