2113281280 has 72 divisors (see below), whose sum is σ = 5522184864. Its totient is φ = 768460800.

The previous prime is 2113281241. The next prime is 2113281281. The reversal of 2113281280 is 821823112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113281281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60966 + ... + 89125.

It is an arithmetic number, because the mean of its divisors is an integer number (76697012).

Almost surely, 2^2113281280 is an apocalyptic number.

2113281280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113281280 is an abundant number, since it is smaller than the sum of its proper divisors (3408903584).

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

2113281280 is a wasteful number, since it uses less digits than its factorization.

2113281280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150123 (or 150109 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 2113281280 is about 45970.4391973799. The cubic root of 2113281280 is about 1283.2731334367.

The spelling of 2113281280 in words is "two billion, one hundred thirteen million, two hundred eighty-one thousand, two hundred eighty".