23115121 has 8 divisors (see below), whose sum is σ = 25137000. Its totient is φ = 21166848.

The previous prime is 23115109. The next prime is 23115133. The reversal of 23115121 is 12151132.

It is an interprime number because it is at equal distance from previous prime (23115109) and next prime (23115133).

It can be written as a sum of positive squares in 4 ways, for example, as 6305121 + 16810000 = 2511^2 + 4100^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23115121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23115095 and 23115104.

It is not an unprimeable number, because it can be changed into a prime (23115151) 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, 17746 + ... + 19003.

It is an arithmetic number, because the mean of its divisors is an integer number (3142125).

Almost surely, 2^23115121 is an apocalyptic number.

It is an amenable number.

23115121 is a deficient number, since it is larger than the sum of its proper divisors (2021879).

23115121 is a wasteful number, since it uses less digits than its factorization.

23115121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36803.

The product of its digits is 60, while the sum is 16.

The square root of 23115121 is about 4807.8187361838. The cubic root of 23115121 is about 284.8603850899.

Adding to 23115121 its reverse (12151132), we get a palindrome (35266253).

The spelling of 23115121 in words is "twenty-three million, one hundred fifteen thousand, one hundred twenty-one".