203131103223 has 16 divisors (see below), whose sum is σ = 279613264896. Its totient is φ = 131035931520.

The previous prime is 203131103221. The next prime is 203131103239. The reversal of 203131103223 is 322301131302.

It is not a de Polignac number, because 203131103223 - 2¹ = 203131103221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203131103223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203131103221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634111 + ... + 899087.

It is an arithmetic number, because the mean of its divisors is an integer number (17475829056).

Almost surely, 2^203131103223 is an apocalyptic number.

203131103223 is a deficient number, since it is larger than the sum of its proper divisors (76482161673).

203131103223 is a wasteful number, since it uses less digits than its factorization.

203131103223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273254.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 203131103223 its reverse (322301131302), we get a palindrome (525432234525).

The spelling of 203131103223 in words is "two hundred three billion, one hundred thirty-one million, one hundred three thousand, two hundred twenty-three".