23120117 has 4 divisors (see below), whose sum is σ = 23237676. Its totient is φ = 23002560.

The previous prime is 23120039. The next prime is 23120171. The reversal of 23120117 is 71102132.

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 16924996 + 6195121 = 4114^2 + 2489^2 .

It is a cyclic number.

It is not a de Polignac number, because 23120117 - 2¹⁰ = 23119093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23120095 and 23120104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122117) 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, 58484 + ... + 58877.

It is an arithmetic number, because the mean of its divisors is an integer number (5809419).

Almost surely, 2^23120117 is an apocalyptic number.

It is an amenable number.

23120117 is a deficient number, since it is larger than the sum of its proper divisors (117559).

23120117 is a wasteful number, since it uses less digits than its factorization.

23120117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117558.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 23120117 is about 4808.3382784492. The cubic root of 23120117 is about 284.8809064327.

Adding to 23120117 its reverse (71102132), we get a palindrome (94222249).

The spelling of 23120117 in words is "twenty-three million, one hundred twenty thousand, one hundred seventeen".