230131540 has 24 divisors (see below), whose sum is σ = 485452800. Its totient is φ = 91638048.

The previous prime is 230131523. The next prime is 230131541. The reversal of 230131540 is 45131032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230131541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21340 + ... + 30259.

It is an arithmetic number, because the mean of its divisors is an integer number (20227200).

Almost surely, 2^230131540 is an apocalyptic number.

230131540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230131540 is an abundant number, since it is smaller than the sum of its proper divisors (255321260).

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

230131540 is a wasteful number, since it uses less digits than its factorization.

230131540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51831 (or 51829 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 230131540 is about 15170.0870135936. The cubic root of 230131540 is about 612.8093475533.

Adding to 230131540 its reverse (45131032), we get a palindrome (275262572).

The spelling of 230131540 in words is "two hundred thirty million, one hundred thirty-one thousand, five hundred forty".