72101323 has 8 divisors (see below), whose sum is σ = 82453248. Its totient is φ = 61762344.

The previous prime is 72101321. The next prime is 72101357. The reversal of 72101323 is 32310127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72101323 - 2¹ = 72101321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72101323.

It is not an unprimeable number, because it can be changed into a prime (72101321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18090 + ... + 21712.

It is an arithmetic number, because the mean of its divisors is an integer number (10306656).

Almost surely, 2^72101323 is an apocalyptic number.

72101323 is a deficient number, since it is larger than the sum of its proper divisors (10351925).

72101323 is a wasteful number, since it uses less digits than its factorization.

72101323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6473.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 72101323 is about 8491.2497902252. The cubic root of 72101323 is about 416.2118215968.

The spelling of 72101323 in words is "seventy-two million, one hundred one thousand, three hundred twenty-three".