73724131 has 8 divisors (see below), whose sum is σ = 82847520. Its totient is φ = 65093952.

The previous prime is 73724093. The next prime is 73724137. The reversal of 73724131 is 13142737.

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

It is a cyclic number.

It is not a de Polignac number, because 73724131 - 2¹¹ = 73722083 is a prime.

It is a super-2 number, since 2×73724131² = 10870494983410322, which contains 22 as substring.

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 73724131.

It is not an unprimeable number, because it can be changed into a prime (73724137) 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, 122986 + ... + 123583.

It is an arithmetic number, because the mean of its divisors is an integer number (10355940).

Almost surely, 2^73724131 is an apocalyptic number.

73724131 is a deficient number, since it is larger than the sum of its proper divisors (9123389).

73724131 is a wasteful number, since it uses less digits than its factorization.

73724131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246605.

The product of its digits is 3528, while the sum is 28.

The square root of 73724131 is about 8586.2757351485. The cubic root of 73724131 is about 419.3112881300.

Adding to 73724131 its reverse (13142737), we get a palindrome (86866868).

The spelling of 73724131 in words is "seventy-three million, seven hundred twenty-four thousand, one hundred thirty-one".