20140432531 has 2 divisors, whose sum is σ = 20140432532. Its totient is φ = 20140432530.

The previous prime is 20140432489. The next prime is 20140432537. The reversal of 20140432531 is 13523404102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20140432531 - 2²¹ = 20138335379 is a prime.

It is a super-2 number, since 2×20140432531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20140432496 and 20140432505.

It is not a weakly prime, because it can be changed into another prime (20140432537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10070216265 + 10070216266.

It is an arithmetic number, because the mean of its divisors is an integer number (10070216266).

Almost surely, 2^20140432531 is an apocalyptic number.

20140432531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20140432531 is an equidigital number, since it uses as much as digits as its factorization.

20140432531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20140432531 its reverse (13523404102), we get a palindrome (33663836633).

The spelling of 20140432531 in words is "twenty billion, one hundred forty million, four hundred thirty-two thousand, five hundred thirty-one".