2151115320 has 32 divisors (see below), whose sum is σ = 6453346320. Its totient is φ = 573630720.

The previous prime is 2151115313. The next prime is 2151115331. The reversal of 2151115320 is 235111512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8962861 + ... + 8963100.

Almost surely, 2^2151115320 is an apocalyptic number.

2151115320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151115320 is an abundant number, since it is smaller than the sum of its proper divisors (4302231000).

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

2151115320 is a wasteful number, since it uses less digits than its factorization.

2151115320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17925975 (or 17925971 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 2151115320 is about 46380.1177230071. The cubic root of 2151115320 is about 1290.8860207175.

Adding to 2151115320 its reverse (235111512), we get a palindrome (2386226832).

The spelling of 2151115320 in words is "two billion, one hundred fifty-one million, one hundred fifteen thousand, three hundred twenty".