3991100023201 has 4 divisors (see below), whose sum is σ = 3991110572592. Its totient is φ = 3991089473812.

The previous prime is 3991100023121. The next prime is 3991100023231. The reversal of 3991100023201 is 1023200011993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3991100023201 - 2¹⁹ = 3991099498913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3991100023231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4685251 + ... + 5471176.

It is an arithmetic number, because the mean of its divisors is an integer number (997777643148).

Almost surely, 2^{3991100023201} is an apocalyptic number.

It is an amenable number.

3991100023201 is a deficient number, since it is larger than the sum of its proper divisors (10549391).

3991100023201 is a wasteful number, since it uses less digits than its factorization.

3991100023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10549390.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 3991100023201 in words is "three trillion, nine hundred ninety-one billion, one hundred million, twenty-three thousand, two hundred one".