211435139 has 2 divisors, whose sum is σ = 211435140. Its totient is φ = 211435138.

The previous prime is 211435123. The next prime is 211435261. The reversal of 211435139 is 931534112.

211435139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211435139 - 2⁴ = 211435123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211435109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105717569 + 105717570.

It is an arithmetic number, because the mean of its divisors is an integer number (105717570).

Almost surely, 2^211435139 is an apocalyptic number.

211435139 is a deficient number, since it is larger than the sum of its proper divisors (1).

211435139 is an equidigital number, since it uses as much as digits as its factorization.

211435139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 211435139 is about 14540.8094341409. The cubic root of 211435139 is about 595.7431469457.

The spelling of 211435139 in words is "two hundred eleven million, four hundred thirty-five thousand, one hundred thirty-nine".