7131697 has 4 divisors (see below), whose sum is σ = 7141876. Its totient is φ = 7121520.

The previous prime is 7131689. The next prime is 7131701. The reversal of 7131697 is 7961317.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3352561 + 3779136 = 1831^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 7131697 - 2³ = 7131689 is a prime.

It is a super-2 number, since 2×7131697² = 101722204199618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7131647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3954 + ... + 5467.

It is an arithmetic number, because the mean of its divisors is an integer number (1785469).

Almost surely, 2^7131697 is an apocalyptic number.

It is an amenable number.

7131697 is a deficient number, since it is larger than the sum of its proper divisors (10179).

7131697 is an equidigital number, since it uses as much as digits as its factorization.

7131697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178.

The product of its digits is 7938, while the sum is 34.

The square root of 7131697 is about 2670.5237314055. The cubic root of 7131697 is about 192.4853263679.

The spelling of 7131697 in words is "seven million, one hundred thirty-one thousand, six hundred ninety-seven".