1631316163 has 4 divisors (see below), whose sum is σ = 1647154288. Its totient is φ = 1615478040.

The previous prime is 1631316161. The next prime is 1631316173. The reversal of 1631316163 is 3616131361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3616131361 = 3851 ⋅939011.

It is a cyclic number.

It is not a de Polignac number, because 1631316163 - 2¹ = 1631316161 is a prime.

It is a super-2 number, since 2×1631316163² = 5322384847330085138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1631316161) 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, 7918908 + ... + 7919113.

It is an arithmetic number, because the mean of its divisors is an integer number (411788572).

Almost surely, 2^1631316163 is an apocalyptic number.

1631316163 is a deficient number, since it is larger than the sum of its proper divisors (15838125).

1631316163 is a wasteful number, since it uses less digits than its factorization.

1631316163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15838124.

The product of its digits is 5832, while the sum is 31.

The square root of 1631316163 is about 40389.5551225809. Note that the first 3 decimals coincide. The cubic root of 1631316163 is about 1177.1885964515.

The spelling of 1631316163 in words is "one billion, six hundred thirty-one million, three hundred sixteen thousand, one hundred sixty-three".