20432321303431 has 4 divisors (see below), whose sum is σ = 21634222556592. Its totient is φ = 19230420050272.

The previous prime is 20432321303413. The next prime is 20432321303461. The reversal of 20432321303431 is 13430312323402.

It is a happy number.

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 20432321303431 - 2²³ = 20432312914823 is a prime.

It is a super-2 number, since 2×20432321303431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20432321303393 and 20432321303402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432321303461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600950626555 + ... + 600950626588.

It is an arithmetic number, because the mean of its divisors is an integer number (5408555639148).

Almost surely, 2^{20432321303431} is an apocalyptic number.

20432321303431 is a deficient number, since it is larger than the sum of its proper divisors (1201901253161).

20432321303431 is a wasteful number, since it uses less digits than its factorization.

20432321303431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201901253160.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 20432321303431 its reverse (13430312323402), we get a palindrome (33862633626833).

The spelling of 20432321303431 in words is "twenty trillion, four hundred thirty-two billion, three hundred twenty-one million, three hundred three thousand, four hundred thirty-one".