201231043 has 8 divisors (see below), whose sum is σ = 216871200. Its totient is φ = 185613888.

The previous prime is 201231007. The next prime is 201231061. The reversal of 201231043 is 340132102.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201231043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201231073) 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, 15303 + ... + 25231.

It is an arithmetic number, because the mean of its divisors is an integer number (27108900).

Almost surely, 2^201231043 is an apocalyptic number.

201231043 is a deficient number, since it is larger than the sum of its proper divisors (15640157).

201231043 is a wasteful number, since it uses less digits than its factorization.

201231043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11501.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 201231043 is about 14185.5927969190. The cubic root of 201231043 is about 586.0009580760. Note that the first 3 decimals are identical.

Adding to 201231043 its reverse (340132102), we get a palindrome (541363145).

The spelling of 201231043 in words is "two hundred one million, two hundred thirty-one thousand, forty-three".