163056431 has 4 divisors (see below), whose sum is σ = 163140000. Its totient is φ = 162972864.

The previous prime is 163056427. The next prime is 163056433. The reversal of 163056431 is 134650361.

It is a happy number.

163056431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134650361 = 3511 ⋅38351.

It is a cyclic number.

It is not a de Polignac number, because 163056431 - 2² = 163056427 is a prime.

It is a super-2 number, since 2×163056431² = 53174799380915522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163056394 and 163056403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163056433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38786 + ... + 42783.

It is an arithmetic number, because the mean of its divisors is an integer number (40785000).

Almost surely, 2^163056431 is an apocalyptic number.

163056431 is a deficient number, since it is larger than the sum of its proper divisors (83569).

163056431 is an equidigital number, since it uses as much as digits as its factorization.

163056431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83568.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 163056431 is about 12769.3551520819. The cubic root of 163056431 is about 546.3185881930.

The spelling of 163056431 in words is "one hundred sixty-three million, fifty-six thousand, four hundred thirty-one".