7145313 has 32 divisors (see below), whose sum is σ = 11366400. Its totient is φ = 3908736.

The previous prime is 7145291. The next prime is 7145377. The reversal of 7145313 is 3135417.

It is not a de Polignac number, because 7145313 - 2¹⁰ = 7144289 is a prime.

It is an Ulam number.

7145313 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145393) 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 31 ways as a sum of consecutive naturals, for example, 90408 + ... + 90486.

It is an arithmetic number, because the mean of its divisors is an integer number (355200).

Almost surely, 2^7145313 is an apocalyptic number.

7145313 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

7145313 is a deficient number, since it is larger than the sum of its proper divisors (4221087).

7145313 is a wasteful number, since it uses less digits than its factorization.

7145313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221.

The product of its digits is 1260, while the sum is 24.

The square root of 7145313 is about 2673.0718284401. The cubic root of 7145313 is about 192.6077476290.

The spelling of 7145313 in words is "seven million, one hundred forty-five thousand, three hundred thirteen".