162281131 has 2 divisors, whose sum is σ = 162281132. Its totient is φ = 162281130.

The previous prime is 162281113. The next prime is 162281159. The reversal of 162281131 is 131182261.

Together with previous prime (162281113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162281131 - 2⁷ = 162281003 is a prime.

It is a super-2 number, since 2×162281131² = 52670330957278322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 162281096 and 162281105.

It is not a weakly prime, because it can be changed into another prime (162281101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81140565 + 81140566.

It is an arithmetic number, because the mean of its divisors is an integer number (81140566).

Almost surely, 2^162281131 is an apocalyptic number.

162281131 is a deficient number, since it is larger than the sum of its proper divisors (1).

162281131 is an equidigital number, since it uses as much as digits as its factorization.

162281131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 25.

The square root of 162281131 is about 12738.9611428876. The cubic root of 162281131 is about 545.4513344601.

The spelling of 162281131 in words is "one hundred sixty-two million, two hundred eighty-one thousand, one hundred thirty-one".