231043221013 has 8 divisors (see below), whose sum is σ = 265312789920. Its totient is φ = 198984592080.

The previous prime is 231043220987. The next prime is 231043221029. The reversal of 231043221013 is 310122340132.

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

It is a cyclic number.

It is not a de Polignac number, because 231043221013 - 2¹³ = 231043212821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231043221083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552734770 + ... + 552735187.

It is an arithmetic number, because the mean of its divisors is an integer number (33164098740).

Almost surely, 2^231043221013 is an apocalyptic number.

It is an amenable number.

231043221013 is a deficient number, since it is larger than the sum of its proper divisors (34269568907).

231043221013 is a wasteful number, since it uses less digits than its factorization.

231043221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105469987.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231043221013 its reverse (310122340132), we get a palindrome (541165561145).

The spelling of 231043221013 in words is "two hundred thirty-one billion, forty-three million, two hundred twenty-one thousand, thirteen".