2113321320 has 128 divisors (see below), whose sum is σ = 7684848000. Its totient is φ = 512317440.

The previous prime is 2113321307. The next prime is 2113321339. The reversal of 2113321320 is 231233112.

2113321320 is a `hidden beast` number, since 2 + 11 + 332 + 1 + 320 = 666.

It is a super-2 number, since 2×2113321320² = 8932254003133084800, which contains 22 as substring.

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 = 2113321293 and 2113321302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77065 + ... + 100824.

It is an arithmetic number, because the mean of its divisors is an integer number (60037875).

Almost surely, 2^2113321320 is an apocalyptic number.

2113321320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113321320 is an abundant number, since it is smaller than the sum of its proper divisors (5571526680).

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

2113321320 is a wasteful number, since it uses less digits than its factorization.

2113321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177920 (or 177910 counting only the distinct ones).

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

The square root of 2113321320 is about 45970.8746925703. The cubic root of 2113321320 is about 1283.2812380420.

Adding to 2113321320 its reverse (231233112), we get a palindrome (2344554432).

The spelling of 2113321320 in words is "two billion, one hundred thirteen million, three hundred twenty-one thousand, three hundred twenty".