231130340 has 24 divisors (see below), whose sum is σ = 554713152. Its totient is φ = 79244640.

The previous prime is 231130331. The next prime is 231130343. The reversal of 231130340 is 43031132.

It is a happy number.

231130340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231130343) 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, 825326 + ... + 825605.

It is an arithmetic number, because the mean of its divisors is an integer number (23113048).

Almost surely, 2^231130340 is an apocalyptic number.

231130340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231130340 is an abundant number, since it is smaller than the sum of its proper divisors (323582812).

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

231130340 is a wasteful number, since it uses less digits than its factorization.

231130340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650947 (or 1650945 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 231130340 is about 15202.9714200876. The cubic root of 231130340 is about 613.6946247480.

Adding to 231130340 its reverse (43031132), we get a palindrome (274161472).

The spelling of 231130340 in words is "two hundred thirty-one million, one hundred thirty thousand, three hundred forty".