23212171 has 4 divisors (see below), whose sum is σ = 23395072. Its totient is φ = 23029272.

The previous prime is 23212169. The next prime is 23212177. The reversal of 23212171 is 17121232.

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 23212171 - 2¹ = 23212169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23212177) 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, 91260 + ... + 91513.

It is an arithmetic number, because the mean of its divisors is an integer number (5848768).

Almost surely, 2^23212171 is an apocalyptic number.

23212171 is a deficient number, since it is larger than the sum of its proper divisors (182901).

23212171 is a wasteful number, since it uses less digits than its factorization.

23212171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182900.

The product of its digits is 168, while the sum is 19.

The square root of 23212171 is about 4817.9010990264. The cubic root of 23212171 is about 285.2584953391.

It can be divided in two parts, 232 and 12171, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 23212171 in words is "twenty-three million, two hundred twelve thousand, one hundred seventy-one".