23432121 has 6 divisors (see below), whose sum is σ = 33846410. Its totient is φ = 15621408.

The previous prime is 23432107. The next prime is 23432141. The reversal of 23432121 is 12123432.

23432121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 19184400 + 4247721 = 4380^2 + 2061^2 .

It is not a de Polignac number, because 23432121 - 2¹⁰ = 23431097 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23432094 and 23432103.

It is not an unprimeable number, because it can be changed into a prime (23432141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1301776 + ... + 1301793.

Almost surely, 2^23432121 is an apocalyptic number.

It is an amenable number.

23432121 is a deficient number, since it is larger than the sum of its proper divisors (10414289).

23432121 is a wasteful number, since it uses less digits than its factorization.

23432121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603575 (or 2603572 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 23432121 is about 4840.6736101497. The cubic root of 23432121 is about 286.1566659218.

Adding to 23432121 its reverse (12123432), we get a palindrome (35555553).

The spelling of 23432121 in words is "twenty-three million, four hundred thirty-two thousand, one hundred twenty-one".