20020001331 has 8 divisors (see below), whose sum is σ = 29120001984. Its totient is φ = 12133334120.

The previous prime is 20020001327. The next prime is 20020001347. The reversal of 20020001331 is 13310002002.

It is a happy number.

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 20020001331 - 2² = 20020001327 is a prime.

It is a super-2 number, since 2×20020001331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20020001371) 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, 303333321 + ... + 303333386.

It is an arithmetic number, because the mean of its divisors is an integer number (3640000248).

Almost surely, 2^20020001331 is an apocalyptic number.

20020001331 is a deficient number, since it is larger than the sum of its proper divisors (9100000653).

20020001331 is a wasteful number, since it uses less digits than its factorization.

20020001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606666721.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20020001331 its reverse (13310002002), we get a palindrome (33330003333).

The spelling of 20020001331 in words is "twenty billion, twenty million, one thousand, three hundred thirty-one".