211030704 has 160 divisors (see below), whose sum is σ = 643530240. Its totient is φ = 66071808.

The previous prime is 211030691. The next prime is 211030723. The reversal of 211030704 is 407030112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 665554 + ... + 665870.

It is an arithmetic number, because the mean of its divisors is an integer number (4022064).

Almost surely, 2^211030704 is an apocalyptic number.

211030704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211030704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321765120).

211030704 is an abundant number, since it is smaller than the sum of its proper divisors (432499536).

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

211030704 is a wasteful number, since it uses less digits than its factorization.

211030704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 211030704 is about 14526.8958831541. The cubic root of 211030704 is about 595.3630569129.

Adding to 211030704 its reverse (407030112), we get a palindrome (618060816).

The spelling of 211030704 in words is "two hundred eleven million, thirty thousand, seven hundred four".