20133012423 has 4 divisors (see below), whose sum is σ = 26844016568. Its totient is φ = 13422008280.

The previous prime is 20133012421. The next prime is 20133012451. The reversal of 20133012423 is 32421033102.

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

It is not a de Polignac number, because 20133012423 - 2¹ = 20133012421 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 20133012423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133012421) 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, 3355502068 + ... + 3355502073.

It is an arithmetic number, because the mean of its divisors is an integer number (6711004142).

Almost surely, 2^20133012423 is an apocalyptic number.

20133012423 is a deficient number, since it is larger than the sum of its proper divisors (6711004145).

20133012423 is an equidigital number, since it uses as much as digits as its factorization.

20133012423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6711004144.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20133012423 its reverse (32421033102), we get a palindrome (52554045525).

The spelling of 20133012423 in words is "twenty billion, one hundred thirty-three million, twelve thousand, four hundred twenty-three".