20000213131 has 4 divisors (see below), whose sum is σ = 20002386664. Its totient is φ = 19998039600.

The previous prime is 20000213119. The next prime is 20000213141. The reversal of 20000213131 is 13131200002.

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

It is a cyclic number.

It is not a de Polignac number, because 20000213131 - 2⁵ = 20000213099 is a prime.

It is a super-2 number, since 2×20000213131² (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 (20000213141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072905 + ... + 1091386.

It is an arithmetic number, because the mean of its divisors is an integer number (5000596666).

Almost surely, 2^20000213131 is an apocalyptic number.

20000213131 is a deficient number, since it is larger than the sum of its proper divisors (2173533).

20000213131 is an equidigital number, since it uses as much as digits as its factorization.

20000213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173532.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20000213131 its reverse (13131200002), we get a palindrome (33131413133).

It can be divided in two parts, 200002 and 13131, that multiplied together give a palindrome (2626226262).

The spelling of 20000213131 in words is "twenty billion, two hundred thirteen thousand, one hundred thirty-one".