203313103323407 has 16 divisors (see below), whose sum is σ = 253481602176000. Its totient is φ = 158425588235040.

The previous prime is 203313103323403. The next prime is 203313103323437. The reversal of 203313103323407 is 704323301313302.

It is a happy number.

It is not a de Polignac number, because 203313103323407 - 2² = 203313103323403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203313103323403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87663194 + ... + 89952552.

It is an arithmetic number, because the mean of its divisors is an integer number (15842600136000).

Almost surely, 2^{203313103323407} is an apocalyptic number.

203313103323407 is a deficient number, since it is larger than the sum of its proper divisors (50168498852593).

203313103323407 is a wasteful number, since it uses less digits than its factorization.

203313103323407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442726.

The product of its (nonzero) digits is 81648, while the sum is 35.

Adding to 203313103323407 its reverse (704323301313302), we get a palindrome (907636404636709).

The spelling of 203313103323407 in words is "two hundred three trillion, three hundred thirteen billion, one hundred three million, three hundred twenty-three thousand, four hundred seven".