231214161 has 12 divisors (see below), whose sum is σ = 327487952. Its totient is φ = 145075008.

The previous prime is 231214133. The next prime is 231214163. The reversal of 231214161 is 161412132.

It is not a de Polignac number, because 231214161 - 2⁹ = 231213649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231214163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132475 + ... + 134208.

Almost surely, 2^231214161 is an apocalyptic number.

It is an amenable number.

231214161 is a deficient number, since it is larger than the sum of its proper divisors (96273791).

231214161 is a wasteful number, since it uses less digits than its factorization.

231214161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266720 (or 266703 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 231214161 is about 15205.7279010247. The cubic root of 231214161 is about 613.7688026339.

Adding to 231214161 its reverse (161412132), we get a palindrome (392626293).

The spelling of 231214161 in words is "two hundred thirty-one million, two hundred fourteen thousand, one hundred sixty-one".