73122231 has 32 divisors (see below), whose sum is σ = 122805760. Its totient is φ = 37666944.

The previous prime is 73122223. The next prime is 73122233. The reversal of 73122231 is 13222137.

It is not a de Polignac number, because 73122231 - 2³ = 73122223 is a prime.

It is a super-2 number, since 2×73122231² = 10693721332834722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 73122198 and 73122207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73122233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8625 + ... + 14853.

It is an arithmetic number, because the mean of its divisors is an integer number (3837680).

Almost surely, 2^73122231 is an apocalyptic number.

73122231 is a deficient number, since it is larger than the sum of its proper divisors (49683529).

73122231 is a wasteful number, since it uses less digits than its factorization.

73122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295.

The product of its digits is 504, while the sum is 21.

The square root of 73122231 is about 8551.1537818004. The cubic root of 73122231 is about 418.1670520378.

Adding to 73122231 its reverse (13222137), we get a palindrome (86344368).

The spelling of 73122231 in words is "seventy-three million, one hundred twenty-two thousand, two hundred thirty-one".