231208740 has 72 divisors (see below), whose sum is σ = 801528000. Its totient is φ = 52847424.

The previous prime is 231208723. The next prime is 231208741. The reversal of 231208740 is 47802132.

It is not an unprimeable number, because it can be changed into a prime (231208741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90490 + ... + 93009.

Almost surely, 2^231208740 is an apocalyptic number.

231208740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231208740 is an abundant number, since it is smaller than the sum of its proper divisors (570319260).

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

231208740 is a wasteful number, since it uses less digits than its factorization.

231208740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183521 (or 183516 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 231208740 is about 15205.5496447843. The cubic root of 231208740 is about 613.7640058305.

The spelling of 231208740 in words is "two hundred thirty-one million, two hundred eight thousand, seven hundred forty".