73722131 has 4 divisors (see below), whose sum is σ = 84253872. Its totient is φ = 63190392.

The previous prime is 73722083. The next prime is 73722133. The reversal of 73722131 is 13122737.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73722131 - 2¹⁰ = 73721107 is a prime.

It is a super-2 number, since 2×73722131² = 10869905198362322, 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 73722131.

It is not an unprimeable number, because it can be changed into a prime (73722133) 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, 5265860 + ... + 5265873.

It is an arithmetic number, because the mean of its divisors is an integer number (21063468).

Almost surely, 2^73722131 is an apocalyptic number.

73722131 is a deficient number, since it is larger than the sum of its proper divisors (10531741).

73722131 is a wasteful number, since it uses less digits than its factorization.

73722131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10531740.

The product of its digits is 1764, while the sum is 26.

The square root of 73722131 is about 8586.1592694289. The cubic root of 73722131 is about 419.3074963812.

Adding to 73722131 its reverse (13122737), we get a palindrome (86844868).

The spelling of 73722131 in words is "seventy-three million, seven hundred twenty-two thousand, one hundred thirty-one".