7311113869 has 6 divisors (see below), whose sum is σ = 7380092174. Its totient is φ = 7242774360.

The previous prime is 7311113863. The next prime is 7311113881. The reversal of 7311113869 is 9683111137.

It can be written as a sum of positive squares in only one way, i.e., 6595551369 + 715562500 = 81213^2 + 26750^2 .

It is not a de Polignac number, because 7311113869 - 2⁵ = 7311113837 is a prime.

It is a super-2 number, since 2×7311113869² (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 (7311113863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307842 + ... + 330739.

Almost surely, 2^7311113869 is an apocalyptic number.

It is an amenable number.

7311113869 is a deficient number, since it is larger than the sum of its proper divisors (68978305).

7311113869 is an equidigital number, since it uses as much as digits as its factorization.

7311113869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638795 (or 638688 counting only the distinct ones).

The product of its digits is 27216, while the sum is 40.

The square root of 7311113869 is about 85505.0517162583. The cubic root of 7311113869 is about 1940.8613694485.

The spelling of 7311113869 in words is "seven billion, three hundred eleven million, one hundred thirteen thousand, eight hundred sixty-nine".