231012165 has 32 divisors (see below), whose sum is σ = 390453120. Its totient is φ = 116308224.

The previous prime is 231012151. The next prime is 231012169. The reversal of 231012165 is 561210132.

It is not a de Polignac number, because 231012165 - 2⁶ = 231012101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231012169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89067 + ... + 91623.

It is an arithmetic number, because the mean of its divisors is an integer number (12201660).

Almost surely, 2^231012165 is an apocalyptic number.

It is an amenable number.

231012165 is a deficient number, since it is larger than the sum of its proper divisors (159440955).

231012165 is a wasteful number, since it uses less digits than its factorization.

231012165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 231012165 is about 15199.0843474204. The cubic root of 231012165 is about 613.5900146162.

Adding to 231012165 its reverse (561210132), we get a palindrome (792222297).

The spelling of 231012165 in words is "two hundred thirty-one million, twelve thousand, one hundred sixty-five".