231211043 has 16 divisors (see below), whose sum is σ = 273208320. Its totient is φ = 191552256.

The previous prime is 231211031. The next prime is 231211073. The reversal of 231211043 is 340112132.

It is not a de Polignac number, because 231211043 - 2⁴ = 231211027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231211073) 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, 25238 + ... + 33156.

It is an arithmetic number, because the mean of its divisors is an integer number (17075520).

Almost surely, 2^231211043 is an apocalyptic number.

231211043 is a deficient number, since it is larger than the sum of its proper divisors (41997277).

231211043 is an equidigital number, since it uses as much as digits as its factorization.

231211043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8066.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231211043 is about 15205.6253735254. The cubic root of 231211043 is about 613.7660436626.

Adding to 231211043 its reverse (340112132), we get a palindrome (571323175).

The spelling of 231211043 in words is "two hundred thirty-one million, two hundred eleven thousand, forty-three".