231741240 has 32 divisors (see below), whose sum is σ = 695224080. Its totient is φ = 61797632.

The previous prime is 231741239. The next prime is 231741259. The reversal of 231741240 is 42147132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 231741240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965469 + ... + 965708.

Almost surely, 2^231741240 is an apocalyptic number.

231741240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231741240 is an abundant number, since it is smaller than the sum of its proper divisors (463482840).

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

231741240 is a wasteful number, since it uses less digits than its factorization.

231741240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931191 (or 1931187 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 231741240 is about 15223.0496287702. The cubic root of 231741240 is about 614.2348339737.

Adding to 231741240 its reverse (42147132), we get a palindrome (273888372).

The spelling of 231741240 in words is "two hundred thirty-one million, seven hundred forty-one thousand, two hundred forty".