23531461 has 4 divisors (see below), whose sum is σ = 24554592. Its totient is φ = 22508332.

The previous prime is 23531447. The next prime is 23531467. The reversal of 23531461 is 16413532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23531461 - 2⁵ = 23531429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23531467) 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, 511531 + ... + 511576.

It is an arithmetic number, because the mean of its divisors is an integer number (6138648).

Almost surely, 2^23531461 is an apocalyptic number.

It is an amenable number.

23531461 is a deficient number, since it is larger than the sum of its proper divisors (1023131).

23531461 is a wasteful number, since it uses less digits than its factorization.

23531461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023130.

The product of its digits is 2160, while the sum is 25.

The square root of 23531461 is about 4850.9237264669. The cubic root of 23531461 is about 286.5604809232.

Adding to 23531461 its reverse (16413532), we get a palindrome (39944993).

The spelling of 23531461 in words is "twenty-three million, five hundred thirty-one thousand, four hundred sixty-one".