23353121 has 12 divisors (see below), whose sum is σ = 27181476. Its totient is φ = 19979520.

The previous prime is 23353093. The next prime is 23353151. The reversal of 23353121 is 12135332.

It can be written as a sum of positive squares in 2 ways, for example, as 12390400 + 10962721 = 3520^2 + 3311^2 .

It is not a de Polignac number, because 23353121 - 2¹⁴ = 23336737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23353093 and 23353102.

It is not an unprimeable number, because it can be changed into a prime (23353151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3620 + ... + 7733.

It is an arithmetic number, because the mean of its divisors is an integer number (2265123).

Almost surely, 2^23353121 is an apocalyptic number.

It is an amenable number.

23353121 is a deficient number, since it is larger than the sum of its proper divisors (3828355).

23353121 is a wasteful number, since it uses less digits than its factorization.

23353121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11392 (or 11381 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 23353121 is about 4832.5066994263. The cubic root of 23353121 is about 285.8347171227.

Adding to 23353121 its reverse (12135332), we get a palindrome (35488453).

The spelling of 23353121 in words is "twenty-three million, three hundred fifty-three thousand, one hundred twenty-one".