1231612 has 6 divisors (see below), whose sum is σ = 2155328. Its totient is φ = 615804.

The previous prime is 1231597. The next prime is 1231613. The reversal of 1231612 is 2161321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153948 + ... + 153955.

2^1231612 is an apocalyptic number.

It is an amenable number.

1231612 is a deficient number, since it is larger than the sum of its proper divisors (923716).

1231612 is a wasteful number, since it uses less digits than its factorization.

1231612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307907 (or 307905 counting only the distinct ones).

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

The square root of 1231612 is about 1109.7801584098. The cubic root of 1231612 is about 107.1909131304.

Adding to 1231612 its reverse (2161321), we get a palindrome (3392933).

The spelling of 1231612 in words is "one million, two hundred thirty-one thousand, six hundred twelve".