232123440 has 80 divisors (see below), whose sum is σ = 761924448. Its totient is φ = 58257408.

The previous prime is 232123439. The next prime is 232123447. The reversal of 232123440 is 44321232.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (232123447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24367 + ... + 32526.

Almost surely, 2^232123440 is an apocalyptic number.

232123440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232123440 is an abundant number, since it is smaller than the sum of its proper divisors (529801008).

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

232123440 is a wasteful number, since it uses less digits than its factorization.

232123440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56926 (or 56920 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 232123440 is about 15235.5977893879. The cubic root of 232123440 is about 614.5723247771.

Adding to 232123440 its reverse (44321232), we get a palindrome (276444672).

The spelling of 232123440 in words is "two hundred thirty-two million, one hundred twenty-three thousand, four hundred forty".