20213002331 has 8 divisors (see below), whose sum is σ = 20618281920. Its totient is φ = 19811458368.

The previous prime is 20213002307. The next prime is 20213002333. The reversal of 20213002331 is 13320031202.

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 20213002331 - 2¹⁰ = 20213001307 is a prime.

It is a super-2 number, since 2×20213002331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20213002333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922976 + ... + 944621.

It is an arithmetic number, because the mean of its divisors is an integer number (2577285240).

Almost surely, 2^20213002331 is an apocalyptic number.

20213002331 is a deficient number, since it is larger than the sum of its proper divisors (405279589).

20213002331 is a wasteful number, since it uses less digits than its factorization.

20213002331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867813.

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

Adding to 20213002331 its reverse (13320031202), we get a palindrome (33533033533).

The spelling of 20213002331 in words is "twenty billion, two hundred thirteen million, two thousand, three hundred thirty-one".