31445816163 has 8 divisors (see below), whose sum is σ = 42615095376. Its totient is φ = 20620207200.

The previous prime is 31445816161. The next prime is 31445816197. The reversal of 31445816163 is 36161854413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31445816163 - 2¹ = 31445816161 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (31445816161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85917348 + ... + 85917713.

It is an arithmetic number, because the mean of its divisors is an integer number (5326886922).

Almost surely, 2^31445816163 is an apocalyptic number.

31445816163 is a deficient number, since it is larger than the sum of its proper divisors (11169279213).

31445816163 is a wasteful number, since it uses less digits than its factorization.

31445816163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171835125.

The product of its digits is 207360, while the sum is 42.

The spelling of 31445816163 in words is "thirty-one billion, four hundred forty-five million, eight hundred sixteen thousand, one hundred sixty-three".