102166131 has 4 divisors (see below), whose sum is σ = 136221512. Its totient is φ = 68110752.

The previous prime is 102166121. The next prime is 102166153. The reversal of 102166131 is 131661201.

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

It is not a de Polignac number, because 102166131 - 2⁹ = 102165619 is a prime.

It is a super-2 number, since 2×102166131² = 20875836647018322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102166098 and 102166107.

It is not an unprimeable number, because it can be changed into a prime (102166121) 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, 17027686 + ... + 17027691.

It is an arithmetic number, because the mean of its divisors is an integer number (34055378).

Almost surely, 2^102166131 is an apocalyptic number.

102166131 is a deficient number, since it is larger than the sum of its proper divisors (34055381).

102166131 is an equidigital number, since it uses as much as digits as its factorization.

102166131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34055380.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 102166131 is about 10107.7263021908. The cubic root of 102166131 is about 467.4864014651.

The spelling of 102166131 in words is "one hundred two million, one hundred sixty-six thousand, one hundred thirty-one".