23531316 has 12 divisors (see below), whose sum is σ = 54906432. Its totient is φ = 7843768.

The previous prime is 23531309. The next prime is 23531341. The reversal of 23531316 is 61313532.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 980460 + ... + 980483.

It is an arithmetic number, because the mean of its divisors is an integer number (4575536).

Almost surely, 2^23531316 is an apocalyptic number.

It is an amenable number.

23531316 is an abundant number, since it is smaller than the sum of its proper divisors (31375116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23531316 is a wasteful number, since it uses less digits than its factorization.

23531316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960950 (or 1960948 counting only the distinct ones).

The product of its digits is 1620, while the sum is 24.

The square root of 23531316 is about 4850.9087808368. The cubic root of 23531316 is about 286.5598923303.

Adding to 23531316 its reverse (61313532), we get a palindrome (84844848).

The spelling of 23531316 in words is "twenty-three million, five hundred thirty-one thousand, three hundred sixteen".