211245430 has 24 divisors (see below), whose sum is σ = 417954096. Its totient is φ = 76816080.

The previous prime is 211245373. The next prime is 211245443. The reversal of 211245430 is 34542112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86082 + ... + 88501.

It is an arithmetic number, because the mean of its divisors is an integer number (17414754).

Almost surely, 2^211245430 is an apocalyptic number.

211245430 is a deficient number, since it is larger than the sum of its proper divisors (206708666).

211245430 is a wasteful number, since it uses less digits than its factorization.

211245430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174612 (or 174601 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 211245430 is about 14534.2846401190. The cubic root of 211245430 is about 595.5649178906.

Adding to 211245430 its reverse (34542112), we get a palindrome (245787542).

The spelling of 211245430 in words is "two hundred eleven million, two hundred forty-five thousand, four hundred thirty".