20203223231 has 8 divisors (see below), whose sum is σ = 20277120000. Its totient is φ = 20129421312.

The previous prime is 20203223219. The next prime is 20203223233. The reversal of 20203223231 is 13232230202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20203223231 is a prime.

It is a super-2 number, since 2×20203223231² (a number of 21 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 (20203223233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417986 + ... + 463808.

It is an arithmetic number, because the mean of its divisors is an integer number (2534640000).

Almost surely, 2^20203223231 is an apocalyptic number.

20203223231 is a deficient number, since it is larger than the sum of its proper divisors (73896769).

20203223231 is a wasteful number, since it uses less digits than its factorization.

20203223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47425.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20203223231 its reverse (13232230202), we get a palindrome (33435453433).

The spelling of 20203223231 in words is "twenty billion, two hundred three million, two hundred twenty-three thousand, two hundred thirty-one".