123217971 has 8 divisors (see below), whose sum is σ = 164371344. Its totient is φ = 82104960.

The previous prime is 123217957. The next prime is 123217979. The reversal of 123217971 is 179712321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123217971 - 2¹¹ = 123215923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123217979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050 + ... + 15831.

It is an arithmetic number, because the mean of its divisors is an integer number (20546418).

Almost surely, 2^123217971 is an apocalyptic number.

123217971 is a deficient number, since it is larger than the sum of its proper divisors (41153373).

123217971 is a wasteful number, since it uses less digits than its factorization.

123217971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20181.

The product of its digits is 5292, while the sum is 33.

The square root of 123217971 is about 11100.3590482470. The cubic root of 123217971 is about 497.6125799278.

The spelling of 123217971 in words is "one hundred twenty-three million, two hundred seventeen thousand, nine hundred seventy-one".