21431056483 has 2 divisors, whose sum is σ = 21431056484. Its totient is φ = 21431056482.

The previous prime is 21431056469. The next prime is 21431056513. The reversal of 21431056483 is 38465013412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21431056483 is a prime.

It is not a weakly prime, because it can be changed into another prime (21431056433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10715528241 + 10715528242.

It is an arithmetic number, because the mean of its divisors is an integer number (10715528242).

Almost surely, 2^21431056483 is an apocalyptic number.

21431056483 is a deficient number, since it is larger than the sum of its proper divisors (1).

21431056483 is an equidigital number, since it uses as much as digits as its factorization.

21431056483 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 21431056483 its reverse (38465013412), we get a palindrome (59896069895).

The spelling of 21431056483 in words is "twenty-one billion, four hundred thirty-one million, fifty-six thousand, four hundred eighty-three".