11311790117 has 4 divisors (see below), whose sum is σ = 11466746220. Its totient is φ = 11156834016.

The previous prime is 11311790111. The next prime is 11311790131. The reversal of 11311790117 is 71109711311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71109711311 = 8219 ⋅8651869.

It can be written as a sum of positive squares in 2 ways, for example, as 4126006756 + 7185783361 = 64234^2 + 84769^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311790117 - 2⁴ = 11311790101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311790111) 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, 77477942 + ... + 77478087.

It is an arithmetic number, because the mean of its divisors is an integer number (2866686555).

Almost surely, 2^11311790117 is an apocalyptic number.

It is an amenable number.

11311790117 is a deficient number, since it is larger than the sum of its proper divisors (154956103).

11311790117 is an equidigital number, since it uses as much as digits as its factorization.

11311790117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154956102.

The product of its (nonzero) digits is 1323, while the sum is 32.

The spelling of 11311790117 in words is "eleven billion, three hundred eleven million, seven hundred ninety thousand, one hundred seventeen".