211673331 has 20 divisors (see below), whose sum is σ = 316596984. Its totient is φ = 140940000.

The previous prime is 211673321. The next prime is 211673333. The reversal of 211673331 is 133376112.

It is not a de Polignac number, because 211673331 - 2⁵ = 211673299 is a prime.

It is a super-2 number, since 2×211673331² = 89611198113271122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 211673295 and 211673304.

It is not an unprimeable number, because it can be changed into a prime (211673333) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 116631 + ... + 118431.

Almost surely, 2^211673331 is an apocalyptic number.

211673331 is a deficient number, since it is larger than the sum of its proper divisors (104923653).

211673331 is a wasteful number, since it uses less digits than its factorization.

211673331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264 (or 3255 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 211673331 is about 14548.9975943362. The cubic root of 211673331 is about 595.9667742314.

The spelling of 211673331 in words is "two hundred eleven million, six hundred seventy-three thousand, three hundred thirty-one".