231213303 has 12 divisors (see below), whose sum is σ = 334889568. Its totient is φ = 153720000.

The previous prime is 231213247. The next prime is 231213361. The reversal of 231213303 is 303312132.

231213303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231213303 - 2⁹ = 231212791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231213383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31698 + ... + 38303.

It is an arithmetic number, because the mean of its divisors is an integer number (27907464).

Almost surely, 2^231213303 is an apocalyptic number.

231213303 is a deficient number, since it is larger than the sum of its proper divisors (103676265).

231213303 is a wasteful number, since it uses less digits than its factorization.

231213303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70374 (or 70371 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 231213303 is about 15205.6996879460. The cubic root of 231213303 is about 613.7680434326.

Adding to 231213303 its reverse (303312132), we get a palindrome (534525435).

The spelling of 231213303 in words is "two hundred thirty-one million, two hundred thirteen thousand, three hundred three".