72143323 has 12 divisors (see below), whose sum is σ = 87020400. Its totient is φ = 58580496.

The previous prime is 72143321. The next prime is 72143327. The reversal of 72143323 is 32334127.

It is not a de Polignac number, because 72143323 - 2¹ = 72143321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72143321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11748 + ... + 16801.

It is an arithmetic number, because the mean of its divisors is an integer number (7251700).

Almost surely, 2^72143323 is an apocalyptic number.

72143323 is a deficient number, since it is larger than the sum of its proper divisors (14877077).

72143323 is a wasteful number, since it uses less digits than its factorization.

72143323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28594 (or 28575 counting only the distinct ones).

The product of its digits is 3024, while the sum is 25.

The square root of 72143323 is about 8493.7225643413. The cubic root of 72143323 is about 416.2926222561.

It can be divided in two parts, 721 and 43323, that added together give a palindrome (44044).

The spelling of 72143323 in words is "seventy-two million, one hundred forty-three thousand, three hundred twenty-three".