2231612 has 6 divisors (see below), whose sum is σ = 3905328. Its totient is φ = 1115804.

The previous prime is 2231609. The next prime is 2231617. The reversal of 2231612 is 2161322.

It is a super-3 number, since 3×2231612³ = 33340899998544638784, which contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278948 + ... + 278955.

It is an arithmetic number, because the mean of its divisors is an integer number (650888).

2^2231612 is an apocalyptic number.

It is an amenable number.

2231612 is a deficient number, since it is larger than the sum of its proper divisors (1673716).

2231612 is a wasteful number, since it uses less digits than its factorization.

2231612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557907 (or 557905 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 2231612 is about 1493.8580923234. The cubic root of 2231612 is about 130.6791284565.

Adding to 2231612 its reverse (2161322), we get a palindrome (4392934).

The spelling of 2231612 in words is "two million, two hundred thirty-one thousand, six hundred twelve".