2111523430 has 8 divisors (see below), whose sum is σ = 3800742192. Its totient is φ = 844609368.

The previous prime is 2111523413. The next prime is 2111523431. The reversal of 2111523430 is 343251112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111523431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105576162 + ... + 105576181.

It is an arithmetic number, because the mean of its divisors is an integer number (475092774).

Almost surely, 2^2111523430 is an apocalyptic number.

2111523430 is a deficient number, since it is larger than the sum of its proper divisors (1689218762).

2111523430 is a wasteful number, since it uses less digits than its factorization.

2111523430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211152350.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2111523430 is about 45951.3158679923. The cubic root of 2111523430 is about 1282.9172212896.

Adding to 2111523430 its reverse (343251112), we get a palindrome (2454774542).

The spelling of 2111523430 in words is "two billion, one hundred eleven million, five hundred twenty-three thousand, four hundred thirty".