7081313 has 4 divisors (see below), whose sum is σ = 7086768. Its totient is φ = 7075860.

The previous prime is 7081279. The next prime is 7081337. The reversal of 7081313 is 3131807.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3131807 = 7 ⋅447401.

It is a cyclic number.

It is not a de Polignac number, because 7081313 - 2¹⁰ = 7080289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7081213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470 + ... + 3792.

It is an arithmetic number, because the mean of its divisors is an integer number (1771692).

Almost surely, 2^7081313 is an apocalyptic number.

It is an amenable number.

7081313 is a deficient number, since it is larger than the sum of its proper divisors (5455).

7081313 is a wasteful number, since it uses less digits than its factorization.

7081313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 7081313 is about 2661.0736555007. The cubic root of 7081313 is about 192.0309646963.

The spelling of 7081313 in words is "seven million, eighty-one thousand, three hundred thirteen".