211353117 has 8 divisors (see below), whose sum is σ = 283046496. Its totient is φ = 140280912.

The previous prime is 211353113. The next prime is 211353119. The reversal of 211353117 is 711353112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211353117 - 2² = 211353113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211353113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154498 + ... + 155859.

It is an arithmetic number, because the mean of its divisors is an integer number (35380812).

Almost surely, 2^211353117 is an apocalyptic number.

It is an amenable number.

211353117 is a deficient number, since it is larger than the sum of its proper divisors (71693379).

211353117 is a wasteful number, since it uses less digits than its factorization.

211353117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310587.

The product of its digits is 630, while the sum is 24.

The square root of 211353117 is about 14537.9887536069. The cubic root of 211353117 is about 595.6661014672. Note that the first 3 decimals are identical.

The spelling of 211353117 in words is "two hundred eleven million, three hundred fifty-three thousand, one hundred seventeen".