20000432131 has 2 divisors, whose sum is σ = 20000432132. Its totient is φ = 20000432130.

The previous prime is 20000432129. The next prime is 20000432183. The reversal of 20000432131 is 13123400002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20000432131 - 2¹ = 20000432129 is a prime.

It is a super-2 number, since 2×20000432131² (a number of 21 digits) contains 22 as substring.

Together with 20000432129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20000432191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000216065 + 10000216066.

It is an arithmetic number, because the mean of its divisors is an integer number (10000216066).

Almost surely, 2^20000432131 is an apocalyptic number.

20000432131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000432131 is an equidigital number, since it uses as much as digits as its factorization.

20000432131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20000432131 its reverse (13123400002), we get a palindrome (33123832133).

The spelling of 20000432131 in words is "twenty billion, four hundred thirty-two thousand, one hundred thirty-one".