1231606 has 8 divisors (see below), whose sum is σ = 1890504. Its totient is φ = 601440.

The previous prime is 1231597. The next prime is 1231613. The reversal of 1231606 is 6061321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7075 + ... + 7246.

It is an arithmetic number, because the mean of its divisors is an integer number (236313).

2^1231606 is an apocalyptic number.

1231606 is a deficient number, since it is larger than the sum of its proper divisors (658898).

1231606 is a wasteful number, since it uses less digits than its factorization.

1231606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14366.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1231606 is about 1109.7774551684. Note that the first 3 decimals coincide. The cubic root of 1231606 is about 107.1907390641.

Adding to 1231606 its reverse (6061321), we get a palindrome (7292927).

The spelling of 1231606 in words is "one million, two hundred thirty-one thousand, six hundred six".