231457805 has 8 divisors (see below), whose sum is σ = 294087672. Its totient is φ = 174274048.

The previous prime is 231457781. The next prime is 231457813. The reversal of 231457805 is 508754132.

It is a happy number.

231457805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 104264521 + 127193284 = 10211^2 + 11278^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231457805 - 2⁸ = 231457549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361432 + ... + 1361601.

It is an arithmetic number, because the mean of its divisors is an integer number (36760959).

Almost surely, 2^231457805 is an apocalyptic number.

It is an amenable number.

231457805 is a deficient number, since it is larger than the sum of its proper divisors (62629867).

231457805 is a wasteful number, since it uses less digits than its factorization.

231457805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723055.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 231457805 is about 15213.7373777780. The cubic root of 231457805 is about 613.9843150828.

The spelling of 231457805 in words is "two hundred thirty-one million, four hundred fifty-seven thousand, eight hundred five".