203313323213 has 32 divisors (see below), whose sum is σ = 276269156352. Its totient is φ = 144477374400.

The previous prime is 203313323201. The next prime is 203313323287. The reversal of 203313323213 is 312323313302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 203313323213 - 2⁶ = 203313323149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203313323113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1140473 + ... + 1306638.

It is an arithmetic number, because the mean of its divisors is an integer number (8633411136).

Almost surely, 2^203313323213 is an apocalyptic number.

It is an amenable number.

203313323213 is a deficient number, since it is larger than the sum of its proper divisors (72955833139).

203313323213 is a wasteful number, since it uses less digits than its factorization.

203313323213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447225.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 203313323213 its reverse (312323313302), we get a palindrome (515636636515).

The spelling of 203313323213 in words is "two hundred three billion, three hundred thirteen million, three hundred twenty-three thousand, two hundred thirteen".