1315971 has 12 divisors (see below), whose sum is σ = 1927848. Its totient is φ = 864864.

The previous prime is 1315969. The next prime is 1316009. The reversal of 1315971 is 1795131.

It is a happy number.

It is not a de Polignac number, because 1315971 - 2¹ = 1315969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345 + ... + 1658.

It is an arithmetic number, because the mean of its divisors is an integer number (160654).

2^1315971 is an apocalyptic number.

1315971 is a deficient number, since it is larger than the sum of its proper divisors (611877).

1315971 is a wasteful number, since it uses less digits than its factorization.

1315971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082 (or 2079 counting only the distinct ones).

The product of its digits is 945, while the sum is 27.

The square root of 1315971 is about 1147.1577921106. The cubic root of 1315971 is about 109.5844098005.

The spelling of 1315971 in words is "one million, three hundred fifteen thousand, nine hundred seventy-one".