311856378277380 has 24 divisors (see below), whose sum is σ = 873197859176832. Its totient is φ = 83161700873952.

The previous prime is 311856378277373. The next prime is 311856378277403. The reversal of 311856378277380 is 83772873658113.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2598803152252 + ... + 2598803152371.

It is an arithmetic number, because the mean of its divisors is an integer number (36383244132368).

Almost surely, 2^{311856378277380} is an apocalyptic number.

311856378277380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311856378277380 is an abundant number, since it is smaller than the sum of its proper divisors (561341480899452).

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

311856378277380 is a wasteful number, since it uses less digits than its factorization.

311856378277380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5197606304635 (or 5197606304633 counting only the distinct ones).

The product of its (nonzero) digits is 284497920, while the sum is 69.

The spelling of 311856378277380 in words is "three hundred eleven trillion, eight hundred fifty-six billion, three hundred seventy-eight million, two hundred seventy-seven thousand, three hundred eighty".