1531366 has 8 divisors (see below), whose sum is σ = 2315520. Its totient is φ = 759528.

The previous prime is 1531357. The next prime is 1531367. The reversal of 1531366 is 6631351.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1531366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2761 + ... + 3268.

It is an arithmetic number, because the mean of its divisors is an integer number (289440).

2^1531366 is an apocalyptic number.

1531366 is a deficient number, since it is larger than the sum of its proper divisors (784154).

1531366 is a wasteful number, since it uses less digits than its factorization.

1531366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158.

The product of its digits is 1620, while the sum is 25.

The square root of 1531366 is about 1237.4837372669. The cubic root of 1531366 is about 115.2638177619.

The spelling of 1531366 in words is "one million, five hundred thirty-one thousand, three hundred sixty-six".