7213135244 has 12 divisors (see below), whose sum is σ = 14426270544. Its totient is φ = 3091343664.

The previous prime is 7213135177. The next prime is 7213135247. The reversal of 7213135244 is 4425313127.

7213135244 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 7213135244.

It is not an unprimeable number, because it can be changed into a prime (7213135247) 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, 128805959 + ... + 128806014.

It is an arithmetic number, because the mean of its divisors is an integer number (1202189212).

Almost surely, 2^7213135244 is an apocalyptic number.

It is an amenable number.

7213135244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7213135244 is a wasteful number, since it uses less digits than its factorization.

7213135244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257611984 (or 257611982 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 7213135244 is about 84930.1786410461. The cubic root of 7213135244 is about 1932.1523094334.

The spelling of 7213135244 in words is "seven billion, two hundred thirteen million, one hundred thirty-five thousand, two hundred forty-four".