7172131 has 2 divisors, whose sum is σ = 7172132. Its totient is φ = 7172130.

The previous prime is 7172107. The next prime is 7172167. The reversal of 7172131 is 1312717.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7172131 - 2⁷ = 7172003 is a prime.

It is a super-2 number, since 2×7172131² = 102878926162322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7172731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3586065 + 3586066.

It is an arithmetic number, because the mean of its divisors is an integer number (3586066).

Almost surely, 2^7172131 is an apocalyptic number.

7172131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7172131 is an equidigital number, since it uses as much as digits as its factorization.

7172131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294, while the sum is 22.

The square root of 7172131 is about 2678.0834565039. The cubic root of 7172131 is about 192.8484138188.

Adding to 7172131 its reverse (1312717), we get a palindrome (8484848).

The spelling of 7172131 in words is "seven million, one hundred seventy-two thousand, one hundred thirty-one".