12311195377 has 4 divisors (see below), whose sum is σ = 13258210420. Its totient is φ = 11364180336.

The previous prime is 12311195363. The next prime is 12311195381. The reversal of 12311195377 is 77359111321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4769836096 + 7541359281 = 69064^2 + 86841^2 .

It is a cyclic number.

It is not a de Polignac number, because 12311195377 - 2³¹ = 10163711729 is a prime.

It is a super-3 number, since 3×12311195377³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12311195387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473507502 + ... + 473507527.

It is an arithmetic number, because the mean of its divisors is an integer number (3314552605).

Almost surely, 2^12311195377 is an apocalyptic number.

It is an amenable number.

12311195377 is a deficient number, since it is larger than the sum of its proper divisors (947015043).

12311195377 is an equidigital number, since it uses as much as digits as its factorization.

12311195377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947015042.

The product of its digits is 39690, while the sum is 40.

The spelling of 12311195377 in words is "twelve billion, three hundred eleven million, one hundred ninety-five thousand, three hundred seventy-seven".