7213131422 has 32 divisors (see below), whose sum is σ = 12474129600. Its totient is φ = 3064239360.

The previous prime is 7213131421. The next prime is 7213131511. The reversal of 7213131422 is 2241313127.

It is a super-2 number, since 2×7213131422² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7213131391 and 7213131400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7213131421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083488 + ... + 1090124.

It is an arithmetic number, because the mean of its divisors is an integer number (389816550).

Almost surely, 2^7213131422 is an apocalyptic number.

7213131422 is a deficient number, since it is larger than the sum of its proper divisors (5260998178).

7213131422 is a wasteful number, since it uses less digits than its factorization.

7213131422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7316.

The product of its digits is 2016, while the sum is 26.

The square root of 7213131422 is about 84930.1561402073. The cubic root of 7213131422 is about 1932.1519681723.

Adding to 7213131422 its reverse (2241313127), we get a palindrome (9454444549).

The spelling of 7213131422 in words is "seven billion, two hundred thirteen million, one hundred thirty-one thousand, four hundred twenty-two".