102781163 has 2 divisors, whose sum is σ = 102781164. Its totient is φ = 102781162.

The previous prime is 102781139. The next prime is 102781171. The reversal of 102781163 is 361187201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102781163 is a prime.

It is not a weakly prime, because it can be changed into another prime (102781183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51390581 + 51390582.

It is an arithmetic number, because the mean of its divisors is an integer number (51390582).

Almost surely, 2^102781163 is an apocalyptic number.

102781163 is a deficient number, since it is larger than the sum of its proper divisors (1).

102781163 is an equidigital number, since it uses as much as digits as its factorization.

102781163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 102781163 is about 10138.1045072538. The cubic root of 102781163 is about 468.4226023637.

The spelling of 102781163 in words is "one hundred two million, seven hundred eighty-one thousand, one hundred sixty-three".