230231540 has 72 divisors (see below), whose sum is σ = 607399296. Its totient is φ = 71755200.

The previous prime is 230231539. The next prime is 230231549. The reversal of 230231540 is 45132032.

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 not an unprimeable number, because it can be changed into a prime (230231549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10145 + ... + 23735.

Almost surely, 2^230231540 is an apocalyptic number.

230231540 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 230231540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303699648).

230231540 is an abundant number, since it is smaller than the sum of its proper divisors (377167756).

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

230231540 is a wasteful number, since it uses less digits than its factorization.

230231540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13629 (or 13616 counting only the distinct ones).

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

The square root of 230231540 is about 15173.3826156200. The cubic root of 230231540 is about 612.8980968844.

Adding to 230231540 its reverse (45132032), we get a palindrome (275363572).

The spelling of 230231540 in words is "two hundred thirty million, two hundred thirty-one thousand, five hundred forty".