7319681121 has 4 divisors (see below), whose sum is σ = 9759574832. Its totient is φ = 4879787412.

The previous prime is 7319681111. The next prime is 7319681141. The reversal of 7319681121 is 1211869137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7319681121 - 2²¹ = 7317583969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7319681121.

It is not an unprimeable number, because it can be changed into a prime (7319681101) 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, 1219946851 + ... + 1219946856.

It is an arithmetic number, because the mean of its divisors is an integer number (2439893708).

Almost surely, 2^7319681121 is an apocalyptic number.

It is an amenable number.

7319681121 is a deficient number, since it is larger than the sum of its proper divisors (2439893711).

7319681121 is a wasteful number, since it uses less digits than its factorization.

7319681121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439893710.

The product of its digits is 18144, while the sum is 39.

The square root of 7319681121 is about 85555.1349773934. The cubic root of 7319681121 is about 1941.6191818269.

The spelling of 7319681121 in words is "seven billion, three hundred nineteen million, six hundred eighty-one thousand, one hundred twenty-one".