231005755 has 8 divisors (see below), whose sum is σ = 277498224. Its totient is φ = 184610400.

The previous prime is 231005729. The next prime is 231005759. The reversal of 231005755 is 557500132.

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

It is not a de Polignac number, because 231005755 - 2⁷ = 231005627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231005759) 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 7 ways as a sum of consecutive naturals, for example, 18936 + ... + 28645.

It is an arithmetic number, because the mean of its divisors is an integer number (34687278).

Almost surely, 2^231005755 is an apocalyptic number.

231005755 is a deficient number, since it is larger than the sum of its proper divisors (46492469).

231005755 is an equidigital number, since it uses as much as digits as its factorization.

231005755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48557.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 231005755 is about 15198.8734779917. The cubic root of 231005755 is about 613.5843393763.

Adding to 231005755 its reverse (557500132), we get a palindrome (788505887).

The spelling of 231005755 in words is "two hundred thirty-one million, five thousand, seven hundred fifty-five".