203110132313 has 4 divisors (see below), whose sum is σ = 221574689808. Its totient is φ = 184645574820.

The previous prime is 203110132289. The next prime is 203110132327. The reversal of 203110132313 is 313231011302.

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-203110132313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203110132333) 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, 9232278731 + ... + 9232278752.

It is an arithmetic number, because the mean of its divisors is an integer number (55393672452).

Almost surely, 2^203110132313 is an apocalyptic number.

It is an amenable number.

203110132313 is a deficient number, since it is larger than the sum of its proper divisors (18464557495).

203110132313 is a wasteful number, since it uses less digits than its factorization.

203110132313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18464557494.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 203110132313 its reverse (313231011302), we get a palindrome (516341143615).

The spelling of 203110132313 in words is "two hundred three billion, one hundred ten million, one hundred thirty-two thousand, three hundred thirteen".