23231040 has 112 divisors (see below), whose sum is σ = 84319872. Its totient is φ = 5308416.

The previous prime is 23231029. The next prime is 23231063. The reversal of 23231040 is 4013232.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4992 + ... + 8448.

It is an arithmetic number, because the mean of its divisors is an integer number (752856).

Almost surely, 2^23231040 is an apocalyptic number.

23231040 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 23231040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42159936).

23231040 is an abundant number, since it is smaller than the sum of its proper divisors (61088832).

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

23231040 is a wasteful number, since it uses less digits than its factorization.

23231040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484 (or 3474 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23231040 is about 4819.8589190971. The cubic root of 23231040 is about 285.3357692361.

Adding to 23231040 its reverse (4013232), we get a palindrome (27244272).

The spelling of 23231040 in words is "twenty-three million, two hundred thirty-one thousand, forty".