7131313 has 16 divisors (see below), whose sum is σ = 8812800. Its totient is φ = 5748288.

The previous prime is 7131301. The next prime is 7131323. The reversal of 7131313 is 3131317.

It is a happy number.

It is not a de Polignac number, because 7131313 - 2⁵ = 7131281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7131323) 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 15 ways as a sum of consecutive naturals, for example, 5220 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (550800).

Almost surely, 2^7131313 is an apocalyptic number.

It is an amenable number.

7131313 is a deficient number, since it is larger than the sum of its proper divisors (1681487).

7131313 is a wasteful number, since it uses less digits than its factorization.

7131313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 1247 counting only the distinct ones).

The product of its digits is 189, while the sum is 19.

The square root of 7131313 is about 2670.4518344280. The cubic root of 7131313 is about 192.4818715711.

The spelling of 7131313 in words is "seven million, one hundred thirty-one thousand, three hundred thirteen".