72336313 has 4 divisors (see below), whose sum is σ = 82670080. Its totient is φ = 62002548.

The previous prime is 72336307. The next prime is 72336323. The reversal of 72336313 is 31363327.

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 an emirpimes, since its reverse is a distinct semiprime: 31363327 = 71 ⋅441737.

It is a cyclic number.

It is not a de Polignac number, because 72336313 - 2⁵ = 72336281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72336323) 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, 5166873 + ... + 5166886.

It is an arithmetic number, because the mean of its divisors is an integer number (20667520).

Almost surely, 2^72336313 is an apocalyptic number.

It is an amenable number.

72336313 is a deficient number, since it is larger than the sum of its proper divisors (10333767).

72336313 is a wasteful number, since it uses less digits than its factorization.

72336313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10333766.

The product of its digits is 6804, while the sum is 28.

The square root of 72336313 is about 8505.0757198275. The cubic root of 72336313 is about 416.6634987137.

The spelling of 72336313 in words is "seventy-two million, three hundred thirty-six thousand, three hundred thirteen".