20133234331 has 4 divisors (see below), whose sum is σ = 23009410672. Its totient is φ = 17257057992.

The previous prime is 20133234313. The next prime is 20133234343. The reversal of 20133234331 is 13343233102.

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 20133234331 - 2⁷ = 20133234203 is a prime.

It is a super-2 number, since 2×20133234331² (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 = 20133234296 and 20133234305.

It is not an unprimeable number, because it can be changed into a prime (20133234031) 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, 1438088160 + ... + 1438088173.

It is an arithmetic number, because the mean of its divisors is an integer number (5752352668).

Almost surely, 2^20133234331 is an apocalyptic number.

20133234331 is a deficient number, since it is larger than the sum of its proper divisors (2876176341).

20133234331 is an equidigital number, since it uses as much as digits as its factorization.

20133234331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876176340.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20133234331 its reverse (13343233102), we get a palindrome (33476467433).

The spelling of 20133234331 in words is "twenty billion, one hundred thirty-three million, two hundred thirty-four thousand, three hundred thirty-one".