111311311420 has 24 divisors (see below), whose sum is σ = 233935153200. Its totient is φ = 44489972352.

The previous prime is 111311311399. The next prime is 111311311439. The reversal of 111311311420 is 24113113111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2133090 + ... + 2184649.

It is an arithmetic number, because the mean of its divisors is an integer number (9747298050).

Almost surely, 2^111311311420 is an apocalyptic number.

111311311420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111311311420 is an abundant number, since it is smaller than the sum of its proper divisors (122623841780).

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

111311311420 is a wasteful number, since it uses less digits than its factorization.

111311311420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319037 (or 4319035 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 111311311420 its reverse (24113113111), we get a palindrome (135424424531).

The spelling of 111311311420 in words is "one hundred eleven billion, three hundred eleven million, three hundred eleven thousand, four hundred twenty".