7172231 has 8 divisors (see below), whose sum is σ = 7875984. Its totient is φ = 6477120.

The previous prime is 7172219. The next prime is 7172237. The reversal of 7172231 is 1322717.

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 7172231 - 2⁶ = 7172167 is a prime.

It is a super-2 number, since 2×7172231² = 102881795034722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7172197 and 7172206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7172237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (984498).

Almost surely, 2^7172231 is an apocalyptic number.

7172231 is a deficient number, since it is larger than the sum of its proper divisors (703753).

7172231 is a wasteful number, since it uses less digits than its factorization.

7172231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321.

The product of its digits is 588, while the sum is 23.

The square root of 7172231 is about 2678.1021265068. The cubic root of 7172231 is about 192.8493101006.

Adding to 7172231 its reverse (1322717), we get a palindrome (8494948).

The spelling of 7172231 in words is "seven million, one hundred seventy-two thousand, two hundred thirty-one".