1312156 has 12 divisors (see below), whose sum is σ = 2317392. Its totient is φ = 650048.

The previous prime is 1312153. The next prime is 1312169. The reversal of 1312156 is 6512131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312153) 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, 1000 + ... + 1903.

It is an arithmetic number, because the mean of its divisors is an integer number (193116).

2^1312156 is an apocalyptic number.

It is an amenable number.

1312156 is a deficient number, since it is larger than the sum of its proper divisors (1005236).

1312156 is a wasteful number, since it uses less digits than its factorization.

1312156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 3018 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 1312156 is about 1145.4937799918. The cubic root of 1312156 is about 109.4784122355.

Adding to 1312156 its reverse (6512131), we get a palindrome (7824287).

The spelling of 1312156 in words is "one million, three hundred twelve thousand, one hundred fifty-six".