23531642 has 8 divisors (see below), whose sum is σ = 35346132. Its totient is φ = 11749600.

The previous prime is 23531617. The next prime is 23531647. The reversal of 23531642 is 24613532.

It can be written as a sum of positive squares in 2 ways, for example, as 17631601 + 5900041 = 4199^2 + 2429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (23531647) 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, 6209 + ... + 9252.

Almost surely, 2^23531642 is an apocalyptic number.

23531642 is a deficient number, since it is larger than the sum of its proper divisors (11814490).

23531642 is a wasteful number, since it uses less digits than its factorization.

23531642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16224.

The product of its digits is 4320, while the sum is 26.

The square root of 23531642 is about 4850.9423826716. The cubic root of 23531642 is about 286.5612156462.

The spelling of 23531642 in words is "twenty-three million, five hundred thirty-one thousand, six hundred forty-two".