231294340 has 24 divisors (see below), whose sum is σ = 486319680. Its totient is φ = 92403168.

The previous prime is 231294281. The next prime is 231294341. The reversal of 231294340 is 43492132.

231294340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231294299 and 231294308.

It is not an unprimeable number, because it can be changed into a prime (231294341) 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, 10449 + ... + 23911.

It is an arithmetic number, because the mean of its divisors is an integer number (20263320).

Almost surely, 2^231294340 is an apocalyptic number.

231294340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231294340 is an abundant number, since it is smaller than the sum of its proper divisors (255025340).

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

231294340 is a wasteful number, since it uses less digits than its factorization.

231294340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14331 (or 14329 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 231294340 is about 15208.3641460875. The cubic root of 231294340 is about 613.8397407364.

The spelling of 231294340 in words is "two hundred thirty-one million, two hundred ninety-four thousand, three hundred forty".