23313040 has 40 divisors (see below), whose sum is σ = 54871488. Its totient is φ = 9210240.

The previous prime is 23313011. The next prime is 23313067. The reversal of 23313040 is 4031332.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4885 + ... + 8395.

Almost surely, 2^23313040 is an apocalyptic number.

23313040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23313040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27435744).

23313040 is an abundant number, since it is smaller than the sum of its proper divisors (31558448).

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

23313040 is a wasteful number, since it uses less digits than its factorization.

23313040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607 (or 3601 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 23313040 is about 4828.3578989135. The cubic root of 23313040 is about 285.6710972815.

Adding to 23313040 its reverse (4031332), we get a palindrome (27344372).

The spelling of 23313040 in words is "twenty-three million, three hundred thirteen thousand, forty".