20404201431 has 8 divisors (see below), whose sum is σ = 28805931504. Its totient is φ = 12802636160.

The previous prime is 20404201423. The next prime is 20404201451. The reversal of 20404201431 is 13410240402.

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 20404201431 - 2³ = 20404201423 is a prime.

It is a super-2 number, since 2×20404201431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20404201398 and 20404201407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404201451) 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 7 ways as a sum of consecutive naturals, for example, 200041140 + ... + 200041241.

It is an arithmetic number, because the mean of its divisors is an integer number (3600741438).

Almost surely, 2^20404201431 is an apocalyptic number.

20404201431 is a deficient number, since it is larger than the sum of its proper divisors (8401730073).

20404201431 is a wasteful number, since it uses less digits than its factorization.

20404201431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400082401.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20404201431 its reverse (13410240402), we get a palindrome (33814441833).

The spelling of 20404201431 in words is "twenty billion, four hundred four million, two hundred one thousand, four hundred thirty-one".