23121671 has 8 divisors (see below), whose sum is σ = 24084000. Its totient is φ = 22170400.

The previous prime is 23121667. The next prime is 23121673. The reversal of 23121671 is 17612132.

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

It is a cyclic number.

It is not a de Polignac number, because 23121671 - 2² = 23121667 is a prime.

It is a super-2 number, since 2×23121671² = 1069223339664482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121673) 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, 1646 + ... + 6996.

It is an arithmetic number, because the mean of its divisors is an integer number (3010500).

Almost surely, 2^23121671 is an apocalyptic number.

23121671 is a deficient number, since it is larger than the sum of its proper divisors (962329).

23121671 is a wasteful number, since it uses less digits than its factorization.

23121671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529.

The product of its digits is 504, while the sum is 23.

The square root of 23121671 is about 4808.4998700218. The cubic root of 23121671 is about 284.8872889697.

The spelling of 23121671 in words is "twenty-three million, one hundred twenty-one thousand, six hundred seventy-one".