20033012423 has 4 divisors (see below), whose sum is σ = 20034248808. Its totient is φ = 20031776040.

The previous prime is 20033012413. The next prime is 20033012431. The reversal of 20033012423 is 32421033002.

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 20033012423 - 2⁶ = 20033012359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20033012395 and 20033012404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033012413) 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, 593561 + ... + 626402.

It is an arithmetic number, because the mean of its divisors is an integer number (5008562202).

Almost surely, 2^20033012423 is an apocalyptic number.

20033012423 is a deficient number, since it is larger than the sum of its proper divisors (1236385).

20033012423 is a wasteful number, since it uses less digits than its factorization.

20033012423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236384.

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

Adding to 20033012423 its reverse (32421033002), we get a palindrome (52454045425).

The spelling of 20033012423 in words is "twenty billion, thirty-three million, twelve thousand, four hundred twenty-three".