231341505 has 16 divisors (see below), whose sum is σ = 378755520. Its totient is φ = 120512448.

The previous prime is 231341483. The next prime is 231341507. The reversal of 231341505 is 505143132.

It is not a de Polignac number, because 231341505 - 2⁸ = 231341249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231341507) 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 15 ways as a sum of consecutive naturals, for example, 178690 + ... + 179979.

It is an arithmetic number, because the mean of its divisors is an integer number (23672220).

Almost surely, 2^231341505 is an apocalyptic number.

It is an amenable number.

231341505 is a deficient number, since it is larger than the sum of its proper divisors (147414015).

231341505 is a wasteful number, since it uses less digits than its factorization.

231341505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358720.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 231341505 is about 15209.9146940409. The cubic root of 231341505 is about 613.8814621546.

Adding to 231341505 its reverse (505143132), we get a palindrome (736484637).

The spelling of 231341505 in words is "two hundred thirty-one million, three hundred forty-one thousand, five hundred five".