7288667231 has 2 divisors, whose sum is σ = 7288667232. Its totient is φ = 7288667230.

The previous prime is 7288667213. The next prime is 7288667233. The reversal of 7288667231 is 1327668827.

Together with previous prime (7288667213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (1327668827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7288667231 - 2²² = 7284472927 is a prime.

It is a super-2 number, since 2×7288667231² (a number of 21 digits) contains 22 as substring.

Together with 7288667233, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7288667231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7288667233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3644333615 + 3644333616.

It is an arithmetic number, because the mean of its divisors is an integer number (3644333616).

Almost surely, 2^7288667231 is an apocalyptic number.

7288667231 is a deficient number, since it is larger than the sum of its proper divisors (1).

7288667231 is an equidigital number, since it uses as much as digits as its factorization.

7288667231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 50.

The square root of 7288667231 is about 85373.6916795801. The cubic root of 7288667231 is about 1938.8730507090.

The spelling of 7288667231 in words is "seven billion, two hundred eighty-eight million, six hundred sixty-seven thousand, two hundred thirty-one".