203041321313 has 4 divisors (see below), whose sum is σ = 203043296448. Its totient is φ = 203039346180.

The previous prime is 203041321291. The next prime is 203041321367. The reversal of 203041321313 is 313123140302.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203041321313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203041321913) 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, 824381 + ... + 1041962.

It is an arithmetic number, because the mean of its divisors is an integer number (50760824112).

Almost surely, 2^203041321313 is an apocalyptic number.

It is an amenable number.

203041321313 is a deficient number, since it is larger than the sum of its proper divisors (1975135).

203041321313 is a wasteful number, since it uses less digits than its factorization.

203041321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975134.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 203041321313 its reverse (313123140302), we get a palindrome (516164461615).

The spelling of 203041321313 in words is "two hundred three billion, forty-one million, three hundred twenty-one thousand, three hundred thirteen".