7272431 has 2 divisors, whose sum is σ = 7272432. Its totient is φ = 7272430.

The previous prime is 7272427. The next prime is 7272437. The reversal of 7272431 is 1342727.

7272431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (1342727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7272431 - 2² = 7272427 is a prime.

It is a super-2 number, since 2×7272431² = 105776505299522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7272431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7272437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3636215 + 3636216.

It is an arithmetic number, because the mean of its divisors is an integer number (3636216).

Almost surely, 2^7272431 is an apocalyptic number.

7272431 is a deficient number, since it is larger than the sum of its proper divisors (1).

7272431 is an equidigital number, since it uses as much as digits as its factorization.

7272431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 26.

The square root of 7272431 is about 2696.7445188597. The cubic root of 7272431 is about 193.7432302872.

The spelling of 7272431 in words is "seven million, two hundred seventy-two thousand, four hundred thirty-one".