2191309230 has 32 divisors (see below), whose sum is σ = 5737246848. Its totient is φ = 531226400.

The previous prime is 2191309187. The next prime is 2191309243. The reversal of 2191309230 is 329031912.

It is a happy number.

2191309230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2191309230³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3319836 + ... + 3320495.

It is an arithmetic number, because the mean of its divisors is an integer number (179288964).

Almost surely, 2^2191309230 is an apocalyptic number.

2191309230 is an abundant number, since it is smaller than the sum of its proper divisors (3545937618).

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

2191309230 is a wasteful number, since it uses less digits than its factorization.

2191309230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6640352.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 2191309230 is about 46811.4220036093. The cubic root of 2191309230 is about 1298.8765896291.

The spelling of 2191309230 in words is "two billion, one hundred ninety-one million, three hundred nine thousand, two hundred thirty".