161132911 has 8 divisors (see below), whose sum is σ = 168903504. Its totient is φ = 153545280.

The previous prime is 161132899. The next prime is 161132927. The reversal of 161132911 is 119231161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161132911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161132971) 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, 43936 + ... + 47461.

It is an arithmetic number, because the mean of its divisors is an integer number (21112938).

Almost surely, 2^161132911 is an apocalyptic number.

161132911 is a deficient number, since it is larger than the sum of its proper divisors (7770593).

161132911 is an equidigital number, since it uses as much as digits as its factorization.

161132911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91481.

The product of its digits is 324, while the sum is 25.

The square root of 161132911 is about 12693.8138870869. The cubic root of 161132911 is about 544.1618415798.

The spelling of 161132911 in words is "one hundred sixty-one million, one hundred thirty-two thousand, nine hundred eleven".