20001413431 has 4 divisors (see below), whose sum is σ = 20004877872. Its totient is φ = 19997948992.

The previous prime is 20001413429. The next prime is 20001413447. The reversal of 20001413431 is 13431410002.

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 20001413431 - 2¹ = 20001413429 is a prime.

It is a super-2 number, since 2×20001413431² (a number of 21 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 = 20001413399 and 20001413408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001413401) 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 in 3 ways as a sum of consecutive naturals, for example, 1723546 + ... + 1735111.

It is an arithmetic number, because the mean of its divisors is an integer number (5001219468).

Almost surely, 2^20001413431 is an apocalyptic number.

20001413431 is a deficient number, since it is larger than the sum of its proper divisors (3464441).

20001413431 is an equidigital number, since it uses as much as digits as its factorization.

20001413431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464440.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20001413431 its reverse (13431410002), we get a palindrome (33432823433).

The spelling of 20001413431 in words is "twenty billion, one million, four hundred thirteen thousand, four hundred thirty-one".