2011231420 has 24 divisors (see below), whose sum is σ = 4607548848. Its totient is φ = 731356800.

The previous prime is 2011231399. The next prime is 2011231421. The reversal of 2011231420 is 241321102.

It is a junction number, because it is equal to n+sod(n) for n = 2011231394 and 2011231403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011231421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4570761 + ... + 4571200.

It is an arithmetic number, because the mean of its divisors is an integer number (191981202).

Almost surely, 2^2011231420 is an apocalyptic number.

2011231420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011231420 is an abundant number, since it is smaller than the sum of its proper divisors (2596317428).

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

2011231420 is a wasteful number, since it uses less digits than its factorization.

2011231420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9141981 (or 9141979 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2011231420 is about 44846.7548435781. The cubic root of 2011231420 is about 1262.2750992388.

Adding to 2011231420 its reverse (241321102), we get a palindrome (2252552522).

The spelling of 2011231420 in words is "two billion, eleven million, two hundred thirty-one thousand, four hundred twenty".