19475477231 has 32 divisors (see below), whose sum is σ = 23498956800. Its totient is φ = 16117315200.

The previous prime is 19475477221. The next prime is 19475477237. The reversal of 19475477231 is 13277457491.

It is not a de Polignac number, because 19475477231 - 2⁶ = 19475477167 is a prime.

It is a super-2 number, since 2×19475477231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19475477231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19475477237) 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 31 ways as a sum of consecutive naturals, for example, 5176391 + ... + 5180151.

It is an arithmetic number, because the mean of its divisors is an integer number (734342400).

Almost surely, 2^19475477231 is an apocalyptic number.

19475477231 is a deficient number, since it is larger than the sum of its proper divisors (4023479569).

19475477231 is an equidigital number, since it uses as much as digits as its factorization.

19475477231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300 (or 4286 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 50.

The spelling of 19475477231 in words is "nineteen billion, four hundred seventy-five million, four hundred seventy-seven thousand, two hundred thirty-one".