203312001103313 has 4 divisors (see below), whose sum is σ = 203312029707888. Its totient is φ = 203311972498740.

The previous prime is 203312001103307. The next prime is 203312001103327. The reversal of 203312001103313 is 313301100213302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203312001103313 - 2¹⁶ = 203312001037777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203312001103333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5478518 + ... + 20895888.

It is an arithmetic number, because the mean of its divisors is an integer number (50828007426972).

Almost surely, 2^{203312001103313} is an apocalyptic number.

It is an amenable number.

203312001103313 is a deficient number, since it is larger than the sum of its proper divisors (28604575).

203312001103313 is a wasteful number, since it uses less digits than its factorization.

203312001103313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28604574.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 203312001103313 its reverse (313301100213302), we get a palindrome (516613101316615).

The spelling of 203312001103313 in words is "two hundred three trillion, three hundred twelve billion, one million, one hundred three thousand, three hundred thirteen".