20131432435 has 8 divisors (see below), whose sum is σ = 24159036960. Its totient is φ = 16104267264.

The previous prime is 20131432381. The next prime is 20131432439. The reversal of 20131432435 is 53423413102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20131432435 - 2⁹ = 20131431923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20131432439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171 + ... + 200659.

It is an arithmetic number, because the mean of its divisors is an integer number (3019879620).

Almost surely, 2^20131432435 is an apocalyptic number.

20131432435 is a deficient number, since it is larger than the sum of its proper divisors (4027604525).

20131432435 is a wasteful number, since it uses less digits than its factorization.

20131432435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219677.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20131432435 its reverse (53423413102), we get a palindrome (73554845537).

The spelling of 20131432435 in words is "twenty billion, one hundred thirty-one million, four hundred thirty-two thousand, four hundred thirty-five".