160231121 has 4 divisors (see below), whose sum is σ = 160869744. Its totient is φ = 159592500.

The previous prime is 160231091. The next prime is 160231129. The reversal of 160231121 is 121132061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 160231121 - 2¹⁴ = 160214737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 160231121.

It is not an unprimeable number, because it can be changed into a prime (160231129) 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, 318935 + ... + 319436.

It is an arithmetic number, because the mean of its divisors is an integer number (40217436).

Almost surely, 2^160231121 is an apocalyptic number.

It is an amenable number.

160231121 is a deficient number, since it is larger than the sum of its proper divisors (638623).

160231121 is an equidigital number, since it uses as much as digits as its factorization.

160231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638622.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 160231121 is about 12658.2432035413. The cubic root of 160231121 is about 543.1447971029.

Adding to 160231121 its reverse (121132061), we get a palindrome (281363182).

It can be divided in two parts, 1602 and 31121, that added together give a palindrome (32723).

The spelling of 160231121 in words is "one hundred sixty million, two hundred thirty-one thousand, one hundred twenty-one".