291214201 has 16 divisors (see below), whose sum is σ = 315394560. Its totient is φ = 268058560.

The previous prime is 291214181. The next prime is 291214207. The reversal of 291214201 is 102412192.

It is not a de Polignac number, because 291214201 - 2¹⁵ = 291181433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (291214207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286971 + ... + 287983.

It is an arithmetic number, because the mean of its divisors is an integer number (19712160).

Almost surely, 2^291214201 is an apocalyptic number.

It is an amenable number.

291214201 is a deficient number, since it is larger than the sum of its proper divisors (24180359).

291214201 is a wasteful number, since it uses less digits than its factorization.

291214201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 291214201 is about 17064.9992968063. Note that the first 3 decimals coincide. The cubic root of 291214201 is about 662.8330930185.

Adding to 291214201 its reverse (102412192), we get a palindrome (393626393).

The spelling of 291214201 in words is "two hundred ninety-one million, two hundred fourteen thousand, two hundred one".