203223220431 has 16 divisors (see below), whose sum is σ = 337825613568. Its totient is φ = 105570504000.

The previous prime is 203223220327. The next prime is 203223220451. The reversal of 203223220431 is 134022322302.

It is not a de Polignac number, because 203223220431 - 2²³ = 203214831823 is a prime.

It is a super-2 number, since 2×203223220431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203223220451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439876870 + ... + 439877331.

It is an arithmetic number, because the mean of its divisors is an integer number (21114100848).

Almost surely, 2^203223220431 is an apocalyptic number.

203223220431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

203223220431 is a deficient number, since it is larger than the sum of its proper divisors (134602393137).

203223220431 is a wasteful number, since it uses less digits than its factorization.

203223220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879754222.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 203223220431 its reverse (134022322302), we get a palindrome (337245542733).

The spelling of 203223220431 in words is "two hundred three billion, two hundred twenty-three million, two hundred twenty thousand, four hundred thirty-one".