20000322131 has 2 divisors, whose sum is σ = 20000322132. Its totient is φ = 20000322130.

The previous prime is 20000322109. The next prime is 20000322179. The reversal of 20000322131 is 13122300002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000322131 is a prime.

It is a super-2 number, since 2×20000322131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20000222131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000161065 + 10000161066.

It is an arithmetic number, because the mean of its divisors is an integer number (10000161066).

Almost surely, 2^20000322131 is an apocalyptic number.

20000322131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000322131 is an equidigital number, since it uses as much as digits as its factorization.

20000322131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20000322131 its reverse (13122300002), we get a palindrome (33122622133).

The spelling of 20000322131 in words is "twenty billion, three hundred twenty-two thousand, one hundred thirty-one".