2311111398 has 32 divisors (see below), whose sum is σ = 4873242240. Its totient is φ = 728663040.

The previous prime is 2311111381. The next prime is 2311111409. The reversal of 2311111398 is 8931111132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57261 + ... + 88887.

It is an arithmetic number, because the mean of its divisors is an integer number (152288820).

Almost surely, 2^2311111398 is an apocalyptic number.

2311111398 is an abundant number, since it is smaller than the sum of its proper divisors (2562130842).

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

2311111398 is a wasteful number, since it uses less digits than its factorization.

2311111398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32292.

The product of its digits is 1296, while the sum is 30.

The square root of 2311111398 is about 48074.0199900112. The cubic root of 2311111398 is about 1322.1283764945.

The spelling of 2311111398 in words is "two billion, three hundred eleven million, one hundred eleven thousand, three hundred ninety-eight".