23877121 has 4 divisors (see below), whose sum is σ = 24700500. Its totient is φ = 23053744.

The previous prime is 23877109. The next prime is 23877137. The reversal of 23877121 is 12177832.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7230721 + 16646400 = 2689^2 + 4080^2 .

It is a cyclic number.

It is not a de Polignac number, because 23877121 - 2⁵ = 23877089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23877181) 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, 411646 + ... + 411703.

It is an arithmetic number, because the mean of its divisors is an integer number (6175125).

Almost surely, 2^23877121 is an apocalyptic number.

It is an amenable number.

23877121 is a deficient number, since it is larger than the sum of its proper divisors (823379).

23877121 is an equidigital number, since it uses as much as digits as its factorization.

23877121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823378.

The product of its digits is 4704, while the sum is 31.

The square root of 23877121 is about 4886.4221062041. The cubic root of 23877121 is about 287.9567876589.

The spelling of 23877121 in words is "twenty-three million, eight hundred seventy-seven thousand, one hundred twenty-one".