23331040 has 24 divisors (see below), whose sum is σ = 55119960. Its totient is φ = 9332352.

The previous prime is 23331023. The next prime is 23331047. The reversal of 23331040 is 4013332.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23331047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72750 + ... + 73069.

It is an arithmetic number, because the mean of its divisors is an integer number (2296665).

Almost surely, 2^23331040 is an apocalyptic number.

23331040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23331040 is an abundant number, since it is smaller than the sum of its proper divisors (31788920).

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

23331040 is a wasteful number, since it uses less digits than its factorization.

23331040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145834 (or 145826 counting only the distinct ones).

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

The square root of 23331040 is about 4830.2215270110. The cubic root of 23331040 is about 285.7446005929.

Adding to 23331040 its reverse (4013332), we get a palindrome (27344372).

The spelling of 23331040 in words is "twenty-three million, three hundred thirty-one thousand, forty".