102605204020331 has 2 divisors, whose sum is σ = 102605204020332. Its totient is φ = 102605204020330.

The previous prime is 102605204020321. The next prime is 102605204020391. The reversal of 102605204020331 is 133020402506201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102605204020331 is a prime.

It is a super-2 number, since 2×102605204020331² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102605204020294 and 102605204020303.

It is not a weakly prime, because it can be changed into another prime (102605204020321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51302602010165 + 51302602010166.

It is an arithmetic number, because the mean of its divisors is an integer number (51302602010166).

Almost surely, 2^{102605204020331} is an apocalyptic number.

102605204020331 is a deficient number, since it is larger than the sum of its proper divisors (1).

102605204020331 is an equidigital number, since it uses as much as digits as its factorization.

102605204020331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 102605204020331 its reverse (133020402506201), we get a palindrome (235625606526532).

The spelling of 102605204020331 in words is "one hundred two trillion, six hundred five billion, two hundred four million, twenty thousand, three hundred thirty-one".