203113031323 has 4 divisors (see below), whose sum is σ = 203148404128. Its totient is φ = 203077658520.

The previous prime is 203113031321. The next prime is 203113031333. The reversal of 203113031323 is 323130311302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203113031323 - 2¹ = 203113031321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203113031294 and 203113031303.

It is not an unprimeable number, because it can be changed into a prime (203113031321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17677788 + ... + 17689273.

It is an arithmetic number, because the mean of its divisors is an integer number (50787101032).

Almost surely, 2^203113031323 is an apocalyptic number.

203113031323 is a deficient number, since it is larger than the sum of its proper divisors (35372805).

203113031323 is an equidigital number, since it uses as much as digits as its factorization.

203113031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35372804.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 203113031323 its reverse (323130311302), we get a palindrome (526243342625).

The spelling of 203113031323 in words is "two hundred three billion, one hundred thirteen million, thirty-one thousand, three hundred twenty-three".