203111232213103 has 4 divisors (see below), whose sum is σ = 203115505317928. Its totient is φ = 203106959108280.

The previous prime is 203111232213083. The next prime is 203111232213107. The reversal of 203111232213103 is 301312232111302.

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 203111232213103 - 2²⁵ = 203111198658671 is a prime.

It is a super-2 number, since 2×203111232213103² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203111232213107) 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, 2136481113 + ... + 2136576178.

It is an arithmetic number, because the mean of its divisors is an integer number (50778876329482).

Almost surely, 2^{203111232213103} is an apocalyptic number.

203111232213103 is a deficient number, since it is larger than the sum of its proper divisors (4273104825).

203111232213103 is an equidigital number, since it uses as much as digits as its factorization.

203111232213103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273104824.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 203111232213103 its reverse (301312232111302), we get a palindrome (504423464324405).

The spelling of 203111232213103 in words is "two hundred three trillion, one hundred eleven billion, two hundred thirty-two million, two hundred thirteen thousand, one hundred three".