20203123033 has 4 divisors (see below), whose sum is σ = 20231618980. Its totient is φ = 20174627088.

The previous prime is 20203123027. The next prime is 20203123063. The reversal of 20203123033 is 33032130202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13044609369 + 7158513664 = 114213^2 + 84608^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203123033 - 2⁹ = 20203122521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20203123033.

It is not an unprimeable number, because it can be changed into a prime (20203123063) 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, 14246910 + ... + 14248327.

It is an arithmetic number, because the mean of its divisors is an integer number (5057904745).

Almost surely, 2^20203123033 is an apocalyptic number.

It is an amenable number.

20203123033 is a deficient number, since it is larger than the sum of its proper divisors (28495947).

20203123033 is an equidigital number, since it uses as much as digits as its factorization.

20203123033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28495946.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20203123033 its reverse (33032130202), we get a palindrome (53235253235).

The spelling of 20203123033 in words is "twenty billion, two hundred three million, one hundred twenty-three thousand, thirty-three".