7224131 has 2 divisors, whose sum is σ = 7224132. Its totient is φ = 7224130.

The previous prime is 7224127. The next prime is 7224143. The reversal of 7224131 is 1314227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7224131 - 2² = 7224127 is a prime.

It is a super-2 number, since 2×7224131² = 104376137410322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7224101) 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 as a sum of consecutive naturals, namely, 3612065 + 3612066.

It is an arithmetic number, because the mean of its divisors is an integer number (3612066).

Almost surely, 2^7224131 is an apocalyptic number.

7224131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7224131 is an equidigital number, since it uses as much as digits as its factorization.

7224131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 20.

The square root of 7224131 is about 2687.7743580889. The cubic root of 7224131 is about 193.3133606663.

Adding to 7224131 its reverse (1314227), we get a palindrome (8538358).

The spelling of 7224131 in words is "seven million, two hundred twenty-four thousand, one hundred thirty-one".