311378419263 has 4 divisors (see below), whose sum is σ = 415171225688. Its totient is φ = 207585612840.

The previous prime is 311378419193. The next prime is 311378419273. The reversal of 311378419263 is 362914873113.

It is a happy number.

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

It is not a de Polignac number, because 311378419263 - 2⁸ = 311378419007 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 (311378419273) 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, 51896403208 + ... + 51896403213.

It is an arithmetic number, because the mean of its divisors is an integer number (103792806422).

Almost surely, 2^311378419263 is an apocalyptic number.

311378419263 is a deficient number, since it is larger than the sum of its proper divisors (103792806425).

311378419263 is a wasteful number, since it uses less digits than its factorization.

311378419263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103792806424.

The product of its digits is 653184, while the sum is 48.

The spelling of 311378419263 in words is "three hundred eleven billion, three hundred seventy-eight million, four hundred nineteen thousand, two hundred sixty-three".