20233332331 has 4 divisors (see below), whose sum is σ = 20236769352. Its totient is φ = 20229895312.

The previous prime is 20233332319. The next prime is 20233332347. The reversal of 20233332331 is 13323333202.

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 20233332331 - 2¹⁷ = 20233201259 is a prime.

It is a super-2 number, since 2×20233332331² (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 = 20233332296 and 20233332305.

It is not an unprimeable number, because it can be changed into a prime (20233332631) 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, 1709665 + ... + 1721458.

It is an arithmetic number, because the mean of its divisors is an integer number (5059192338).

Almost surely, 2^20233332331 is an apocalyptic number.

20233332331 is a deficient number, since it is larger than the sum of its proper divisors (3437021).

20233332331 is an equidigital number, since it uses as much as digits as its factorization.

20233332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437020.

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 20233332331 its reverse (13323333202), we get a palindrome (33556665533).

The spelling of 20233332331 in words is "twenty billion, two hundred thirty-three million, three hundred thirty-two thousand, three hundred thirty-one".