7222613731 has 2 divisors, whose sum is σ = 7222613732. Its totient is φ = 7222613730.

The previous prime is 7222613641. The next prime is 7222613737. The reversal of 7222613731 is 1373162227.

7222613731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7222613731 - 2¹³ = 7222605539 is a prime.

It is a super-2 number, since 2×7222613731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7222613737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611306865 + 3611306866.

It is an arithmetic number, because the mean of its divisors is an integer number (3611306866).

Almost surely, 2^7222613731 is an apocalyptic number.

7222613731 is a deficient number, since it is larger than the sum of its proper divisors (1).

7222613731 is an equidigital number, since it uses as much as digits as its factorization.

7222613731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 7222613731 is about 84985.9619643150. The cubic root of 7222613731 is about 1932.9982598622.

Adding to 7222613731 its reverse (1373162227), we get a palindrome (8595775958).

The spelling of 7222613731 in words is "seven billion, two hundred twenty-two million, six hundred thirteen thousand, seven hundred thirty-one".