20133302331 has 4 divisors (see below), whose sum is σ = 26844403112. Its totient is φ = 13422201552.

The previous prime is 20133302303. The next prime is 20133302339. The reversal of 20133302331 is 13320333102.

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

It is not a de Polignac number, because 20133302331 - 2¹⁷ = 20133171259 is a prime.

It is a super-2 number, since 2×20133302331² (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 = 20133302298 and 20133302307.

It is not an unprimeable number, because it can be changed into a prime (20133302339) 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, 3355550386 + ... + 3355550391.

It is an arithmetic number, because the mean of its divisors is an integer number (6711100778).

Almost surely, 2^20133302331 is an apocalyptic number.

20133302331 is a deficient number, since it is larger than the sum of its proper divisors (6711100781).

20133302331 is an equidigital number, since it uses as much as digits as its factorization.

20133302331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711100780.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20133302331 its reverse (13320333102), we get a palindrome (33453635433).

The spelling of 20133302331 in words is "twenty billion, one hundred thirty-three million, three hundred two thousand, three hundred thirty-one".