102171023 has 4 divisors (see below), whose sum is σ = 104932440. Its totient is φ = 99409608.

The previous prime is 102171001. The next prime is 102171079. The reversal of 102171023 is 320171201.

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 102171023 - 2¹⁰ = 102169999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102170992 and 102171010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102171623) 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, 1380653 + ... + 1380726.

It is an arithmetic number, because the mean of its divisors is an integer number (26233110).

Almost surely, 2^102171023 is an apocalyptic number.

102171023 is a deficient number, since it is larger than the sum of its proper divisors (2761417).

102171023 is an equidigital number, since it uses as much as digits as its factorization.

102171023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761416.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 102171023 is about 10107.9682923919. The cubic root of 102171023 is about 467.4938628647.

The spelling of 102171023 in words is "one hundred two million, one hundred seventy-one thousand, twenty-three".