20002231331 has 4 divisors (see below), whose sum is σ = 21178833192. Its totient is φ = 18825629472.

The previous prime is 20002231321. The next prime is 20002231349. The reversal of 20002231331 is 13313220002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002231331 is a prime.

It is a super-2 number, since 2×20002231331² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1176601843 = 20002231331 / (2 + 0 + 0 + 0 + 2 + 2 + 3 + 1 + 3 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002231321) 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, 588300905 + ... + 588300938.

It is an arithmetic number, because the mean of its divisors is an integer number (5294708298).

Almost surely, 2^20002231331 is an apocalyptic number.

20002231331 is a deficient number, since it is larger than the sum of its proper divisors (1176601861).

20002231331 is a wasteful number, since it uses less digits than its factorization.

20002231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176601860.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20002231331 its reverse (13313220002), we get a palindrome (33315451333).

The spelling of 20002231331 in words is "twenty billion, two million, two hundred thirty-one thousand, three hundred thirty-one".