2011321356 has 48 divisors (see below), whose sum is σ = 5184560640. Its totient is φ = 601773120.

The previous prime is 2011321343. The next prime is 2011321381. The reversal of 2011321356 is 6531231102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86011 + ... + 106866.

It is an arithmetic number, because the mean of its divisors is an integer number (108011680).

Almost surely, 2^2011321356 is an apocalyptic number.

It is an amenable number.

2011321356 is an abundant number, since it is smaller than the sum of its proper divisors (3173239284).

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

2011321356 is a wasteful number, since it uses less digits than its factorization.

2011321356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192974 (or 192972 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2011321356 is about 44847.7575359125. The cubic root of 2011321356 is about 1262.2939139610.

Adding to 2011321356 its reverse (6531231102), we get a palindrome (8542552458).

The spelling of 2011321356 in words is "two billion, eleven million, three hundred twenty-one thousand, three hundred fifty-six".