2113134320 has 120 divisors (see below), whose sum is σ = 5423559120. Its totient is φ = 765107200.

The previous prime is 2113134319. The next prime is 2113134347. The reversal of 2113134320 is 234313112.

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 = 2113134292 and 2113134301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4055660 + ... + 4056180.

It is an arithmetic number, because the mean of its divisors is an integer number (45196326).

Almost surely, 2^2113134320 is an apocalyptic number.

2113134320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113134320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2711779560).

2113134320 is an abundant number, since it is smaller than the sum of its proper divisors (3310424800).

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

2113134320 is a wasteful number, since it uses less digits than its factorization.

2113134320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2113134320 is about 45968.8407511001. The cubic root of 2113134320 is about 1283.2433859861.

Adding to 2113134320 its reverse (234313112), we get a palindrome (2347447432).

The spelling of 2113134320 in words is "two billion, one hundred thirteen million, one hundred thirty-four thousand, three hundred twenty".