102811000 has 32 divisors (see below), whose sum is σ = 240580080. Its totient is φ = 41124000.

The previous prime is 102810991. The next prime is 102811001. The reversal of 102811000 is 118201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102811001) 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 in 7 ways as a sum of consecutive naturals, for example, 50406 + ... + 52405.

Almost surely, 2^102811000 is an apocalyptic number.

102811000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102811000 is an abundant number, since it is smaller than the sum of its proper divisors (137769080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102811000 is a wasteful number, since it uses less digits than its factorization.

102811000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102832 (or 102818 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 102811000 is about 10139.5759280159. The cubic root of 102811000 is about 468.4679251075.

Adding to 102811000 its reverse (118201), we get a palindrome (102929201).

The spelling of 102811000 in words is "one hundred two million, eight hundred eleven thousand".