231448340 has 12 divisors (see below), whose sum is σ = 486041556. Its totient is φ = 92579328.

The previous prime is 231448339. The next prime is 231448409. The reversal of 231448340 is 43844132.

It can be written as a sum of positive squares in 2 ways, for example, as 173870596 + 57577744 = 13186^2 + 7588^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5786189 + ... + 5786228.

It is an arithmetic number, because the mean of its divisors is an integer number (40503463).

Almost surely, 2^231448340 is an apocalyptic number.

231448340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231448340 is an abundant number, since it is smaller than the sum of its proper divisors (254593216).

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

231448340 is a wasteful number, since it uses less digits than its factorization.

231448340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11572426 (or 11572424 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 231448340 is about 15213.4263070487. The cubic root of 231448340 is about 613.9759457521.

The spelling of 231448340 in words is "two hundred thirty-one million, four hundred forty-eight thousand, three hundred forty".