20330213131 has 16 divisors (see below), whose sum is σ = 20847220128. Its totient is φ = 19818489600.

The previous prime is 20330213093. The next prime is 20330213179. The reversal of 20330213131 is 13131203302.

It is a cyclic number.

It is not a de Polignac number, because 20330213131 - 2⁷ = 20330213003 is a prime.

It is a super-2 number, since 2×20330213131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20330213099 and 20330213108.

It is not an unprimeable number, because it can be changed into a prime (20330213191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8911711 + ... + 8913991.

It is an arithmetic number, because the mean of its divisors is an integer number (1302951258).

Almost surely, 2^20330213131 is an apocalyptic number.

20330213131 is a deficient number, since it is larger than the sum of its proper divisors (517006997).

20330213131 is a wasteful number, since it uses less digits than its factorization.

20330213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20330213131 its reverse (13131203302), we get a palindrome (33461416433).

The spelling of 20330213131 in words is "twenty billion, three hundred thirty million, two hundred thirteen thousand, one hundred thirty-one".