7226138831 has 4 divisors (see below), whose sum is σ = 7226965200. Its totient is φ = 7225312464.

The previous prime is 7226138797. The next prime is 7226138851. The reversal of 7226138831 is 1388316227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1388316227 = 2087 ⋅665221.

It is a cyclic number.

It is not a de Polignac number, because 7226138831 - 2¹⁴ = 7226122447 is a prime.

It is a super-2 number, since 2×7226138831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7226138851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399926 + ... + 417603.

It is an arithmetic number, because the mean of its divisors is an integer number (1806741300).

Almost surely, 2^7226138831 is an apocalyptic number.

7226138831 is a deficient number, since it is larger than the sum of its proper divisors (826369).

7226138831 is an equidigital number, since it uses as much as digits as its factorization.

7226138831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826368.

The product of its digits is 96768, while the sum is 41.

The square root of 7226138831 is about 85006.6987419227. The cubic root of 7226138831 is about 1933.3126845364.

The spelling of 7226138831 in words is "seven billion, two hundred twenty-six million, one hundred thirty-eight thousand, eight hundred thirty-one".