7228636931 has 2 divisors, whose sum is σ = 7228636932. Its totient is φ = 7228636930.

The previous prime is 7228636873. The next prime is 7228636957. The reversal of 7228636931 is 1396368227.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1396368227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7228636931 - 2¹⁰ = 7228635907 is a prime.

It is a super-2 number, since 2×7228636931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7228630931) 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, 3614318465 + 3614318466.

It is an arithmetic number, because the mean of its divisors is an integer number (3614318466).

Almost surely, 2^7228636931 is an apocalyptic number.

7228636931 is a deficient number, since it is larger than the sum of its proper divisors (1).

7228636931 is an equidigital number, since it uses as much as digits as its factorization.

7228636931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 7228636931 is about 85021.3910201427. The cubic root of 7228636931 is about 1933.5354430570.

The spelling of 7228636931 in words is "seven billion, two hundred twenty-eight million, six hundred thirty-six thousand, nine hundred thirty-one".