230431540 has 12 divisors (see below), whose sum is σ = 483906276. Its totient is φ = 92172608.

The previous prime is 230431519. The next prime is 230431547. The reversal of 230431540 is 45134032.

It can be written as a sum of positive squares in 2 ways, for example, as 122146704 + 108284836 = 11052^2 + 10406^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230431547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5760769 + ... + 5760808.

It is an arithmetic number, because the mean of its divisors is an integer number (40325523).

Almost surely, 2^230431540 is an apocalyptic number.

230431540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230431540 is an abundant number, since it is smaller than the sum of its proper divisors (253474736).

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

230431540 is a wasteful number, since it uses less digits than its factorization.

230431540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11521586 (or 11521584 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 230431540 is about 15179.9716732279. The cubic root of 230431540 is about 613.0755184805.

Adding to 230431540 its reverse (45134032), we get a palindrome (275565572).

The spelling of 230431540 in words is "two hundred thirty million, four hundred thirty-one thousand, five hundred forty".