231505041 has 16 divisors (see below), whose sum is σ = 318024128. Its totient is φ = 149688000.

The previous prime is 231505019. The next prime is 231505091. The reversal of 231505041 is 140505132.

It is not a de Polignac number, because 231505041 - 2⁵ = 231505009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231504999 and 231505017.

It is not an unprimeable number, because it can be changed into a prime (231505091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33591 + ... + 39891.

It is an arithmetic number, because the mean of its divisors is an integer number (19876508).

Almost surely, 2^231505041 is an apocalyptic number.

It is an amenable number.

231505041 is a deficient number, since it is larger than the sum of its proper divisors (86519087).

231505041 is a wasteful number, since it uses less digits than its factorization.

231505041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6672.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 231505041 is about 15215.2897113397. The cubic root of 231505041 is about 614.0260796287.

Subtracting from 231505041 its reverse (140505132), we obtain a palindrome (90999909).

The spelling of 231505041 in words is "two hundred thirty-one million, five hundred five thousand, forty-one".