19431235063 has 2 divisors, whose sum is σ = 19431235064. Its totient is φ = 19431235062.

The previous prime is 19431235037. The next prime is 19431235097. The reversal of 19431235063 is 36053213491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19431235063 - 2³³ = 10841300471 is a prime.

It is a super-2 number, since 2×19431235063² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19431235013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9715617531 + 9715617532.

It is an arithmetic number, because the mean of its divisors is an integer number (9715617532).

Almost surely, 2^19431235063 is an apocalyptic number.

19431235063 is a deficient number, since it is larger than the sum of its proper divisors (1).

19431235063 is an equidigital number, since it uses as much as digits as its factorization.

19431235063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 19431235063 in words is "nineteen billion, four hundred thirty-one million, two hundred thirty-five thousand, sixty-three".