12160231 has 4 divisors (see below), whose sum is σ = 12456864. Its totient is φ = 11863600.

The previous prime is 12160223. The next prime is 12160243. The reversal of 12160231 is 13206121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13206121 = 19 ⋅695059.

It is a cyclic number.

It is not a de Polignac number, because 12160231 - 2³ = 12160223 is a prime.

It is a super-2 number, since 2×12160231² = 295742435946722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12160201) 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, 148255 + ... + 148336.

It is an arithmetic number, because the mean of its divisors is an integer number (3114216).

Almost surely, 2^12160231 is an apocalyptic number.

12160231 is a deficient number, since it is larger than the sum of its proper divisors (296633).

12160231 is an equidigital number, since it uses as much as digits as its factorization.

12160231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296632.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 12160231 is about 3487.1522765718. The cubic root of 12160231 is about 229.9573392837.

Adding to 12160231 its reverse (13206121), we get a palindrome (25366352).

The spelling of 12160231 in words is "twelve million, one hundred sixty thousand, two hundred thirty-one".