102187131863 has 4 divisors (see below), whose sum is σ = 103862330808. Its totient is φ = 100511932920.

The previous prime is 102187131857. The next prime is 102187131877. The reversal of 102187131863 is 368131781201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102187131863 - 2⁶ = 102187131799 is a prime.

It is a super-2 number, since 2×102187131863² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102187131863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102187139863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837599381 + ... + 837599502.

It is an arithmetic number, because the mean of its divisors is an integer number (25965582702).

Almost surely, 2^102187131863 is an apocalyptic number.

102187131863 is a deficient number, since it is larger than the sum of its proper divisors (1675198945).

102187131863 is an equidigital number, since it uses as much as digits as its factorization.

102187131863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675198944.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 102187131863 in words is "one hundred two billion, one hundred eighty-seven million, one hundred thirty-one thousand, eight hundred sixty-three".