231541005 has 16 divisors (see below), whose sum is σ = 380479104. Its totient is φ = 120150720.

The previous prime is 231540997. The next prime is 231541007. The reversal of 231541005 is 500145132.

It is not a de Polignac number, because 231541005 - 2³ = 231540997 is a prime.

It is a super-2 number, since 2×231541005² = 107222473992820050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231541007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208041 + ... + 209150.

It is an arithmetic number, because the mean of its divisors is an integer number (23779944).

Almost surely, 2^231541005 is an apocalyptic number.

It is an amenable number.

231541005 is a deficient number, since it is larger than the sum of its proper divisors (148938099).

231541005 is a wasteful number, since it uses less digits than its factorization.

231541005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417236.

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

The square root of 231541005 is about 15216.4715029471. The cubic root of 231541005 is about 614.0578740271.

Adding to 231541005 its reverse (500145132), we get a palindrome (731686137).

The spelling of 231541005 in words is "two hundred thirty-one million, five hundred forty-one thousand, five".