102131863771 has 16 divisors (see below), whose sum is σ = 118513197504. Its totient is φ = 86202192384.

The previous prime is 102131863763. The next prime is 102131863783. The reversal of 102131863771 is 177368131201.

It is not a de Polignac number, because 102131863771 - 2³ = 102131863763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102131863721) 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 in 15 ways as a sum of consecutive naturals, for example, 153321 + ... + 477253.

It is an arithmetic number, because the mean of its divisors is an integer number (7407074844).

Almost surely, 2^102131863771 is an apocalyptic number.

102131863771 is a deficient number, since it is larger than the sum of its proper divisors (16381333733).

102131863771 is an equidigital number, since it uses as much as digits as its factorization.

102131863771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324630.

The product of its (nonzero) digits is 42336, while the sum is 40.

Adding to 102131863771 its reverse (177368131201), we get a palindrome (279499994972).

The spelling of 102131863771 in words is "one hundred two billion, one hundred thirty-one million, eight hundred sixty-three thousand, seven hundred seventy-one".