160999331 has 4 divisors (see below), whose sum is σ = 169473000. Its totient is φ = 152525664.

The previous prime is 160999303. The next prime is 160999343. The reversal of 160999331 is 133999061.

160999331 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.

It is a cyclic number.

It is not a de Polignac number, because 160999331 - 2¹⁰ = 160998307 is a prime.

It is a super-2 number, since 2×160999331² = 51841569164895122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160999301) 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, 4236806 + ... + 4236843.

It is an arithmetic number, because the mean of its divisors is an integer number (42368250).

Almost surely, 2^160999331 is an apocalyptic number.

160999331 is a deficient number, since it is larger than the sum of its proper divisors (8473669).

160999331 is an equidigital number, since it uses as much as digits as its factorization.

160999331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8473668.

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 160999331 is about 12688.5511781290. The cubic root of 160999331 is about 544.0114290329.

The spelling of 160999331 in words is "one hundred sixty million, nine hundred ninety-nine thousand, three hundred thirty-one".