213391379 has 2 divisors, whose sum is σ = 213391380. Its totient is φ = 213391378.

The previous prime is 213391363. The next prime is 213391391. The reversal of 213391379 is 973193312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213391379 - 2⁴ = 213391363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213391319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106695689 + 106695690.

It is an arithmetic number, because the mean of its divisors is an integer number (106695690).

Almost surely, 2^213391379 is an apocalyptic number.

213391379 is a deficient number, since it is larger than the sum of its proper divisors (1).

213391379 is an equidigital number, since it uses as much as digits as its factorization.

213391379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 38.

The square root of 213391379 is about 14607.9217892211. The cubic root of 213391379 is about 597.5748209029.

The spelling of 213391379 in words is "two hundred thirteen million, three hundred ninety-one thousand, three hundred seventy-nine".