211031201 has 4 divisors (see below), whose sum is σ = 212692992. Its totient is φ = 209369412.

The previous prime is 211031159. The next prime is 211031203. The reversal of 211031201 is 102130112.

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 211031201 - 2⁶ = 211031137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211031203) 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, 830705 + ... + 830958.

It is an arithmetic number, because the mean of its divisors is an integer number (53173248).

Almost surely, 2^211031201 is an apocalyptic number.

It is an amenable number.

211031201 is a deficient number, since it is larger than the sum of its proper divisors (1661791).

211031201 is a wasteful number, since it uses less digits than its factorization.

211031201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661790.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 211031201 is about 14526.9129893450. The cubic root of 211031201 is about 595.3635242938.

Adding to 211031201 its reverse (102130112), we get a palindrome (313161313).

The spelling of 211031201 in words is "two hundred eleven million, thirty-one thousand, two hundred one".