203311210103 has 4 divisors (see below), whose sum is σ = 203319376968. Its totient is φ = 203303043240.

The previous prime is 203311210013. The next prime is 203311210117. The reversal of 203311210103 is 301012113302.

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 203311210103 - 2²² = 203307015799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203311212103) 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, 4045976 + ... + 4095917.

It is an arithmetic number, because the mean of its divisors is an integer number (50829844242).

Almost surely, 2^203311210103 is an apocalyptic number.

203311210103 is a deficient number, since it is larger than the sum of its proper divisors (8166865).

203311210103 is an equidigital number, since it uses as much as digits as its factorization.

203311210103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8166864.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 203311210103 its reverse (301012113302), we get a palindrome (504323323405).

The spelling of 203311210103 in words is "two hundred three billion, three hundred eleven million, two hundred ten thousand, one hundred three".