19802201431 has 2 divisors, whose sum is σ = 19802201432. Its totient is φ = 19802201430.

The previous prime is 19802201423. The next prime is 19802201513. The reversal of 19802201431 is 13410220891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19802201431 - 2³ = 19802201423 is a prime.

It is a super-2 number, since 2×19802201431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19802201393 and 19802201402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19802201131) 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 as a sum of consecutive naturals, namely, 9901100715 + 9901100716.

It is an arithmetic number, because the mean of its divisors is an integer number (9901100716).

Almost surely, 2^19802201431 is an apocalyptic number.

19802201431 is a deficient number, since it is larger than the sum of its proper divisors (1).

19802201431 is an equidigital number, since it uses as much as digits as its factorization.

19802201431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 19802201431 in words is "nineteen billion, eight hundred two million, two hundred one thousand, four hundred thirty-one".