232531040 has 96 divisors (see below), whose sum is σ = 631701504. Its totient is φ = 79234560.

The previous prime is 232531037. The next prime is 232531067. The reversal of 232531040 is 40135232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 213377 + ... + 214463.

It is an arithmetic number, because the mean of its divisors is an integer number (6580224).

Almost surely, 2^232531040 is an apocalyptic number.

232531040 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 232531040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315850752).

232531040 is an abundant number, since it is smaller than the sum of its proper divisors (399170464).

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

232531040 is a wasteful number, since it uses less digits than its factorization.

232531040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 232531040 is about 15248.9684897045. The cubic root of 232531040 is about 614.9318363654.

Adding to 232531040 its reverse (40135232), we get a palindrome (272666272).

The spelling of 232531040 in words is "two hundred thirty-two million, five hundred thirty-one thousand, forty".