123931171 has 16 divisors (see below), whose sum is σ = 154470400. Its totient is φ = 96808608.

The previous prime is 123931169. The next prime is 123931183. The reversal of 123931171 is 171139321.

It is not a de Polignac number, because 123931171 - 2¹ = 123931169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123931111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1431 + ... + 15808.

It is an arithmetic number, because the mean of its divisors is an integer number (9654400).

Almost surely, 2^123931171 is an apocalyptic number.

123931171 is a deficient number, since it is larger than the sum of its proper divisors (30539229).

123931171 is a wasteful number, since it uses less digits than its factorization.

123931171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17338.

The product of its digits is 1134, while the sum is 28.

The square root of 123931171 is about 11132.4377833429. The cubic root of 123931171 is about 498.5708134103.

The spelling of 123931171 in words is "one hundred twenty-three million, nine hundred thirty-one thousand, one hundred seventy-one".