7313018 has 4 divisors (see below), whose sum is σ = 10969530. Its totient is φ = 3656508.

The previous prime is 7312997. The next prime is 7313063. The reversal of 7313018 is 8103137.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8103137 = 7 ⋅1157591.

It can be written as a sum of positive squares in only one way, i.e., 7166329 + 146689 = 2677^2 + 383^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7312984 and 7313002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1828253 + ... + 1828256.

Almost surely, 2^7313018 is an apocalyptic number.

7313018 is a deficient number, since it is larger than the sum of its proper divisors (3656512).

7313018 is a wasteful number, since it uses less digits than its factorization.

7313018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656511.

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

The square root of 7313018 is about 2704.2592331358. The cubic root of 7313018 is about 194.1029849636.

The spelling of 7313018 in words is "seven million, three hundred thirteen thousand, eighteen".