11303212320 has 72 divisors (see below), whose sum is σ = 38572216956. Its totient is φ = 3014189568.

The previous prime is 11303212307. The next prime is 11303212337. The reversal of 11303212320 is 2321230311.

11303212320 is a `hidden beast` number, since 1 + 130 + 3 + 212 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10534148496 + 769063824 = 102636^2 + 27732^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11303212293 and 11303212302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3923287 + ... + 3926166.

Almost surely, 2^11303212320 is an apocalyptic number.

11303212320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11303212320 is an abundant number, since it is smaller than the sum of its proper divisors (27269004636).

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

11303212320 is a wasteful number, since it uses less digits than its factorization.

11303212320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7849474 (or 7849463 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 11303212320 its reverse (2321230311), we get a palindrome (13624442631).

The spelling of 11303212320 in words is "eleven billion, three hundred three million, two hundred twelve thousand, three hundred twenty".