20133404431 has 8 divisors (see below), whose sum is σ = 23015095200. Its totient is φ = 17253086208.

The previous prime is 20133404411. The next prime is 20133404477. The reversal of 20133404431 is 13440433102.

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

It is a cyclic number.

It is not a de Polignac number, because 20133404431 - 2⁷ = 20133404303 is a prime.

It is a super-2 number, since 2×20133404431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20133404396 and 20133404405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133404411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311506 + ... + 370543.

It is an arithmetic number, because the mean of its divisors is an integer number (2876886900).

Almost surely, 2^20133404431 is an apocalyptic number.

20133404431 is a deficient number, since it is larger than the sum of its proper divisors (2881690769).

20133404431 is an equidigital number, since it uses as much as digits as its factorization.

20133404431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686273.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20133404431 its reverse (13440433102), we get a palindrome (33573837533).

The spelling of 20133404431 in words is "twenty billion, one hundred thirty-three million, four hundred four thousand, four hundred thirty-one".