203223103221031 has 4 divisors (see below), whose sum is σ = 203318557945200. Its totient is φ = 203127648496864.

The previous prime is 203223103221029. The next prime is 203223103221059. The reversal of 203223103221031 is 130122301322302.

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 203223103221031 - 2¹ = 203223103221029 is a prime.

It is a super-2 number, since 2×203223103221031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203223103220987 and 203223103221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203223103221091) 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, 47727358891 + ... + 47727363148.

It is an arithmetic number, because the mean of its divisors is an integer number (50829639486300).

Almost surely, 2^{203223103221031} is an apocalyptic number.

203223103221031 is a deficient number, since it is larger than the sum of its proper divisors (95454724169).

203223103221031 is an equidigital number, since it uses as much as digits as its factorization.

203223103221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95454724168.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 203223103221031 its reverse (130122301322302), we get a palindrome (333345404543333).

The spelling of 203223103221031 in words is "two hundred three trillion, two hundred twenty-three billion, one hundred three million, two hundred twenty-one thousand, thirty-one".