161316127 has 4 divisors (see below), whose sum is σ = 184361296. Its totient is φ = 138270960.

The previous prime is 161316119. The next prime is 161316139. The reversal of 161316127 is 721613161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161316127 - 2³ = 161316119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161316095 and 161316104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161316107) 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, 11522574 + ... + 11522587.

It is an arithmetic number, because the mean of its divisors is an integer number (46090324).

Almost surely, 2^161316127 is an apocalyptic number.

161316127 is a deficient number, since it is larger than the sum of its proper divisors (23045169).

161316127 is an equidigital number, since it uses as much as digits as its factorization.

161316127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23045168.

The product of its digits is 1512, while the sum is 28.

The square root of 161316127 is about 12701.0285803946. The cubic root of 161316127 is about 544.3680096672.

Adding to 161316127 its reverse (721613161), we get a palindrome (882929288).

The spelling of 161316127 in words is "one hundred sixty-one million, three hundred sixteen thousand, one hundred twenty-seven".