3991110213 has 32 divisors (see below), whose sum is σ = 5899170816. Its totient is φ = 2387328768.

The previous prime is 3991110199. The next prime is 3991110269. The reversal of 3991110213 is 3120111993.

It is a happy number.

3991110213 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3991110213 - 2⁹ = 3991109701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3991110293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354570 + ... + 365652.

It is an arithmetic number, because the mean of its divisors is an integer number (184349088).

Almost surely, 2^3991110213 is an apocalyptic number.

It is an amenable number.

3991110213 is a deficient number, since it is larger than the sum of its proper divisors (1908060603).

3991110213 is a wasteful number, since it uses less digits than its factorization.

3991110213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11433.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 3991110213 is about 63175.2341744769. The cubic root of 3991110213 is about 1586.2242082767.

The spelling of 3991110213 in words is "three billion, nine hundred ninety-one million, one hundred ten thousand, two hundred thirteen".