73504313 has 4 divisors (see below), whose sum is σ = 73790580. Its totient is φ = 73218048.

The previous prime is 73504303. The next prime is 73504339. The reversal of 73504313 is 31340537.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31340537 = 17 ⋅1843561.

It can be written as a sum of positive squares in 2 ways, for example, as 69939769 + 3564544 = 8363^2 + 1888^2 .

It is a cyclic number.

It is not a de Polignac number, because 73504313 - 2¹⁰ = 73503289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73504303) 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, 142748 + ... + 143261.

It is an arithmetic number, because the mean of its divisors is an integer number (18447645).

Almost surely, 2^73504313 is an apocalyptic number.

It is an amenable number.

73504313 is a deficient number, since it is larger than the sum of its proper divisors (286267).

73504313 is a wasteful number, since it uses less digits than its factorization.

73504313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286266.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 73504313 is about 8573.4656353192. The cubic root of 73504313 is about 418.8941296987.

It can be divided in two parts, 735043 and 13, that multiplied together give a palindrome (9555559).

The spelling of 73504313 in words is "seventy-three million, five hundred four thousand, three hundred thirteen".