231631841 has 8 divisors (see below), whose sum is σ = 270878784. Its totient is φ = 193924080.

The previous prime is 231631819. The next prime is 231631843. The reversal of 231631841 is 148136132.

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

It is not a de Polignac number, because 231631841 - 2²⁶ = 164522977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231631843) 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, 384470 + ... + 385071.

It is an arithmetic number, because the mean of its divisors is an integer number (33859848).

Almost surely, 2^231631841 is an apocalyptic number.

It is an amenable number.

231631841 is a deficient number, since it is larger than the sum of its proper divisors (39246943).

231631841 is an equidigital number, since it uses as much as digits as its factorization.

231631841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769591.

The product of its digits is 3456, while the sum is 29.

The square root of 231631841 is about 15219.4560021047. The cubic root of 231631841 is about 614.1381640078.

Adding to 231631841 its reverse (148136132), we get a palindrome (379767973).

The spelling of 231631841 in words is "two hundred thirty-one million, six hundred thirty-one thousand, eight hundred forty-one".