211357106 has 4 divisors (see below), whose sum is σ = 317035662. Its totient is φ = 105678552.

The previous prime is 211357087. The next prime is 211357109. The reversal of 211357106 is 601753112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 147501025 + 63856081 = 12145^2 + 7991^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211357109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52839275 + ... + 52839278.

Almost surely, 2^211357106 is an apocalyptic number.

211357106 is a deficient number, since it is larger than the sum of its proper divisors (105678556).

211357106 is a wasteful number, since it uses less digits than its factorization.

211357106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105678555.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 211357106 is about 14538.1259452517. The cubic root of 211357106 is about 595.6698489036.

The spelling of 211357106 in words is "two hundred eleven million, three hundred fifty-seven thousand, one hundred six".