1297131 has 16 divisors (see below), whose sum is σ = 1969920. Its totient is φ = 751520.

The previous prime is 1297129. The next prime is 1297139. The reversal of 1297131 is 1317921.

It is not a de Polignac number, because 1297131 - 2¹ = 1297129 is a prime.

It is a super-2 number, since 2×1297131² = 3365097662322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1297139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96 + ... + 1613.

It is an arithmetic number, because the mean of its divisors is an integer number (123120).

2^1297131 is an apocalyptic number.

1297131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1297131 is a deficient number, since it is larger than the sum of its proper divisors (672789).

1297131 is a wasteful number, since it uses less digits than its factorization.

1297131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746.

The product of its digits is 378, while the sum is 24.

The square root of 1297131 is about 1138.9165904490. The cubic root of 1297131 is about 109.0589418329.

It can be divided in two parts, 129 and 7131, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 1297131 in words is "one million, two hundred ninety-seven thousand, one hundred thirty-one".