20033231331 has 8 divisors (see below), whose sum is σ = 26752648464. Its totient is φ = 13334650880.

The previous prime is 20033231299. The next prime is 20033231347. The reversal of 20033231331 is 13313233002.

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 20033231331 - 2⁵ = 20033231299 is a prime.

It is a super-2 number, since 2×20033231331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20033231298 and 20033231307.

It is not an unprimeable number, because it can be changed into a prime (20033231131) 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, 5206926 + ... + 5210771.

It is an arithmetic number, because the mean of its divisors is an integer number (3344081058).

Almost surely, 2^20033231331 is an apocalyptic number.

20033231331 is a deficient number, since it is larger than the sum of its proper divisors (6719417133).

20033231331 is a wasteful number, since it uses less digits than its factorization.

20033231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10418341.

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

Adding to 20033231331 its reverse (13313233002), we get a palindrome (33346464333).

The spelling of 20033231331 in words is "twenty billion, thirty-three million, two hundred thirty-one thousand, three hundred thirty-one".