2113551328 has 48 divisors (see below), whose sum is σ = 4962263040. Its totient is φ = 866422656.

The previous prime is 2113551313. The next prime is 2113551343. The reversal of 2113551328 is 8231553112.

It is an interprime number because it is at equal distance from previous prime (2113551313) and next prime (2113551343).

It is a self number, because there is not a number n which added to its sum of digits gives 2113551328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199968 + ... + 210271.

It is an arithmetic number, because the mean of its divisors is an integer number (103380480).

Almost surely, 2^2113551328 is an apocalyptic number.

2113551328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2113551328 is an abundant number, since it is smaller than the sum of its proper divisors (2848711712).

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

2113551328 is a wasteful number, since it uses less digits than its factorization.

2113551328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410279 (or 410271 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 2113551328 is about 45973.3762954169. The cubic root of 2113551328 is about 1283.3277926037.

The spelling of 2113551328 in words is "two billion, one hundred thirteen million, five hundred fifty-one thousand, three hundred twenty-eight".