203031223013 has 4 divisors (see below), whose sum is σ = 203502293568. Its totient is φ = 202560152460.

The previous prime is 203031222949. The next prime is 203031223067. The reversal of 203031223013 is 310322130302.

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 not a de Polignac number, because 203031223013 - 2⁶ = 203031222949 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 (203031223313) 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, 235534631 + ... + 235535492.

It is an arithmetic number, because the mean of its divisors is an integer number (50875573392).

Almost surely, 2^203031223013 is an apocalyptic number.

It is an amenable number.

203031223013 is a deficient number, since it is larger than the sum of its proper divisors (471070555).

203031223013 is an equidigital number, since it uses as much as digits as its factorization.

203031223013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471070554.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203031223013 its reverse (310322130302), we get a palindrome (513353353315).

The spelling of 203031223013 in words is "two hundred three billion, thirty-one million, two hundred twenty-three thousand, thirteen".