2311203216 has 160 divisors (see below), whose sum is σ = 7017550848. Its totient is φ = 641733120.

The previous prime is 2311203157. The next prime is 2311203217. The reversal of 2311203216 is 6123021132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2311203192 and 2311203201.

It is not an unprimeable number, because it can be changed into a prime (2311203217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5013226 + ... + 5013686.

Almost surely, 2^2311203216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311203216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3508775424).

2311203216 is an abundant number, since it is smaller than the sum of its proper divisors (4706347632).

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

2311203216 is a wasteful number, since it uses less digits than its factorization.

2311203216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2311203216 is about 48074.9749453913. The cubic root of 2311203216 is about 1322.1458851811.

Adding to 2311203216 its reverse (6123021132), we get a palindrome (8434224348).

The spelling of 2311203216 in words is "two billion, three hundred eleven million, two hundred three thousand, two hundred sixteen".