102020331331 has 2 divisors, whose sum is σ = 102020331332. Its totient is φ = 102020331330.

The previous prime is 102020331319. The next prime is 102020331349. The reversal of 102020331331 is 133133020201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102020331331 - 2³³ = 93430396739 is a prime.

It is a super-2 number, since 2×102020331331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102020331299 and 102020331308.

It is not a weakly prime, because it can be changed into another prime (102020331631) 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, 51010165665 + 51010165666.

It is an arithmetic number, because the mean of its divisors is an integer number (51010165666).

Almost surely, 2^102020331331 is an apocalyptic number.

102020331331 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020331331 is an equidigital number, since it uses as much as digits as its factorization.

102020331331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 102020331331 its reverse (133133020201), we get a palindrome (235153351532).

The spelling of 102020331331 in words is "one hundred two billion, twenty million, three hundred thirty-one thousand, three hundred thirty-one".