203011220423 has 16 divisors (see below), whose sum is σ = 231122246400. Its totient is φ = 176511276480.

The previous prime is 203011220411. The next prime is 203011220429. The reversal of 203011220423 is 324022110302.

It is not a de Polignac number, because 203011220423 - 2¹⁸ = 203010958279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203011220395 and 203011220404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203011220429) 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, 2430488 + ... + 2512626.

It is an arithmetic number, because the mean of its divisors is an integer number (14445140400).

Almost surely, 2^203011220423 is an apocalyptic number.

203011220423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

203011220423 is a deficient number, since it is larger than the sum of its proper divisors (28111025977).

203011220423 is a wasteful number, since it uses less digits than its factorization.

203011220423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91942.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 203011220423 its reverse (324022110302), we get a palindrome (527033330725).

The spelling of 203011220423 in words is "two hundred three billion, eleven million, two hundred twenty thousand, four hundred twenty-three".