1316961 has 24 divisors (see below), whose sum is σ = 2018016. Its totient is φ = 826560.

The previous prime is 1316951. The next prime is 1316963. The reversal of 1316961 is 1696131.

1316961 = 84² + 85² + ... + 165².

It is not a de Polignac number, because 1316961 - 2¹⁷ = 1185889 is a prime.

It is a Curzon number.

1316961 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1316963) 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 23 ways as a sum of consecutive naturals, for example, 15826 + ... + 15908.

It is an arithmetic number, because the mean of its divisors is an integer number (84084).

2^1316961 is an apocalyptic number.

It is an amenable number.

1316961 is a deficient number, since it is larger than the sum of its proper divisors (701055).

1316961 is a wasteful number, since it uses less digits than its factorization.

1316961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 170 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1316961 is about 1147.5892122184. The cubic root of 1316961 is about 109.6118828912.

The spelling of 1316961 in words is "one million, three hundred sixteen thousand, nine hundred sixty-one".