11315203220 has 24 divisors (see below), whose sum is σ = 23766238944. Its totient is φ = 4525259936.

The previous prime is 11315203201. The next prime is 11315203261. The reversal of 11315203220 is 2230251311.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11315203192 and 11315203201.

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 7 ways as a sum of consecutive naturals, for example, 68447 + ... + 165273.

It is an arithmetic number, because the mean of its divisors is an integer number (990259956).

Almost surely, 2^11315203220 is an apocalyptic number.

11315203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11315203220 is an abundant number, since it is smaller than the sum of its proper divisors (12451035724).

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

11315203220 is a wasteful number, since it uses less digits than its factorization.

11315203220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102679 (or 102677 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 11315203220 its reverse (2230251311), we get a palindrome (13545454531).

The spelling of 11315203220 in words is "eleven billion, three hundred fifteen million, two hundred three thousand, two hundred twenty".