102131810 has 16 divisors (see below), whose sum is σ = 200549952. Its totient is φ = 37138800.

The previous prime is 102131789. The next prime is 102131819. The reversal of 102131810 is 18131201.

It is a super-2 number, since 2×102131810² = 20861813227752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102131819) 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, 464126 + ... + 464345.

It is an arithmetic number, because the mean of its divisors is an integer number (12534372).

Almost surely, 2^102131810 is an apocalyptic number.

102131810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102131810 is a deficient number, since it is larger than the sum of its proper divisors (98418142).

102131810 is a wasteful number, since it uses less digits than its factorization.

102131810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928489.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 102131810 is about 10106.0283989310. The cubic root of 102131810 is about 467.4340475275.

The spelling of 102131810 in words is "one hundred two million, one hundred thirty-one thousand, eight hundred ten".