213130439 has 2 divisors, whose sum is σ = 213130440. Its totient is φ = 213130438.

The previous prime is 213130433. The next prime is 213130441. The reversal of 213130439 is 934031312.

It is a happy number.

213130439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213130439 is a prime.

Together with 213130441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213130433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106565219 + 106565220.

It is an arithmetic number, because the mean of its divisors is an integer number (106565220).

Almost surely, 2^213130439 is an apocalyptic number.

213130439 is a deficient number, since it is larger than the sum of its proper divisors (1).

213130439 is an equidigital number, since it uses as much as digits as its factorization.

213130439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 213130439 is about 14598.9876018853. The cubic root of 213130439 is about 597.3311453672.

The spelling of 213130439 in words is "two hundred thirteen million, one hundred thirty thousand, four hundred thirty-nine".