20232461 has 4 divisors (see below), whose sum is σ = 20509692. Its totient is φ = 19955232.

The previous prime is 20232437. The next prime is 20232467. The reversal of 20232461 is 16423202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16423202 = 2 ⋅8211601.

It can be written as a sum of positive squares in 2 ways, for example, as 10278436 + 9954025 = 3206^2 + 3155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20232461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232467) 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, 138506 + ... + 138651.

It is an arithmetic number, because the mean of its divisors is an integer number (5127423).

Almost surely, 2^20232461 is an apocalyptic number.

It is an amenable number.

20232461 is a deficient number, since it is larger than the sum of its proper divisors (277231).

20232461 is an equidigital number, since it uses as much as digits as its factorization.

20232461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277230.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20232461 is about 4498.0508000688. The cubic root of 20232461 is about 272.4893736563.

Adding to 20232461 its reverse (16423202), we get a palindrome (36655663).

The spelling of 20232461 in words is "twenty million, two hundred thirty-two thousand, four hundred sixty-one".