23131541 has 4 divisors (see below), whose sum is σ = 23231052. Its totient is φ = 23032032.

The previous prime is 23131523. The next prime is 23131547. The reversal of 23131541 is 14513132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1833316 + 21298225 = 1354^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131541 - 2⁶ = 23131477 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 (23131547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49406 + ... + 49871.

It is an arithmetic number, because the mean of its divisors is an integer number (5807763).

Almost surely, 2^23131541 is an apocalyptic number.

It is an amenable number.

23131541 is a deficient number, since it is larger than the sum of its proper divisors (99511).

23131541 is an equidigital number, since it uses as much as digits as its factorization.

23131541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99510.

The product of its digits is 360, while the sum is 20.

The square root of 23131541 is about 4809.5260681277. The cubic root of 23131541 is about 284.9278200302.

Adding to 23131541 its reverse (14513132), we get a palindrome (37644673).

The spelling of 23131541 in words is "twenty-three million, one hundred thirty-one thousand, five hundred forty-one".