211113407 has 2 divisors, whose sum is σ = 211113408. Its totient is φ = 211113406.

The previous prime is 211113401. The next prime is 211113437. The reversal of 211113407 is 704311112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211113407 - 2⁴ = 211113391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211113401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105556703 + 105556704.

It is an arithmetic number, because the mean of its divisors is an integer number (105556704).

Almost surely, 2^211113407 is an apocalyptic number.

211113407 is a deficient number, since it is larger than the sum of its proper divisors (1).

211113407 is an equidigital number, since it uses as much as digits as its factorization.

211113407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 211113407 is about 14529.7421518759. The cubic root of 211113407 is about 595.4408210789.

Adding to 211113407 its reverse (704311112), we get a palindrome (915424519).

The spelling of 211113407 in words is "two hundred eleven million, one hundred thirteen thousand, four hundred seven".