211238334 has 16 divisors (see below), whose sum is σ = 469418640. Its totient is φ = 70412760.

The previous prime is 211238327. The next prime is 211238347. The reversal of 211238334 is 433832112.

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 = 211238298 and 211238307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955857 + ... + 1955964.

It is an arithmetic number, because the mean of its divisors is an integer number (29338665).

Almost surely, 2^211238334 is an apocalyptic number.

211238334 is an abundant number, since it is smaller than the sum of its proper divisors (258180306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211238334 is a wasteful number, since it uses less digits than its factorization.

211238334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911832 (or 3911826 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 211238334 is about 14534.0405256075. The cubic root of 211238334 is about 595.5582492241.

The spelling of 211238334 in words is "two hundred eleven million, two hundred thirty-eight thousand, three hundred thirty-four".