72343013 has 4 divisors (see below), whose sum is σ = 76150560. Its totient is φ = 68535468.

The previous prime is 72343009. The next prime is 72343031. The reversal of 72343013 is 31034327.

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.

It is a cyclic number.

It is not a de Polignac number, because 72343013 - 2² = 72343009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72343013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72343003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1903745 + ... + 1903782.

It is an arithmetic number, because the mean of its divisors is an integer number (19037640).

Almost surely, 2^72343013 is an apocalyptic number.

It is an amenable number.

72343013 is a deficient number, since it is larger than the sum of its proper divisors (3807547).

72343013 is a wasteful number, since it uses less digits than its factorization.

72343013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807546.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 72343013 is about 8505.4695931500. The cubic root of 72343013 is about 416.6763625122.

The spelling of 72343013 in words is "seventy-two million, three hundred forty-three thousand, thirteen".