231333013 has 8 divisors (see below), whose sum is σ = 236528640. Its totient is φ = 226148880.

The previous prime is 231333001. The next prime is 231333043. The reversal of 231333013 is 310333132.

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 231333013 - 2¹⁷ = 231201941 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 (231333043) 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, 47548 + ... + 52186.

It is an arithmetic number, because the mean of its divisors is an integer number (29566080).

Almost surely, 2^231333013 is an apocalyptic number.

It is an amenable number.

231333013 is a deficient number, since it is larger than the sum of its proper divisors (5195627).

231333013 is a wasteful number, since it uses less digits than its factorization.

231333013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 231333013 is about 15209.6355314649. The cubic root of 231333013 is about 613.8739506834.

Adding to 231333013 its reverse (310333132), we get a palindrome (541666145).

The spelling of 231333013 in words is "two hundred thirty-one million, three hundred thirty-three thousand, thirteen".