213032311 has 2 divisors, whose sum is σ = 213032312. Its totient is φ = 213032310.

The previous prime is 213032293. The next prime is 213032333. The reversal of 213032311 is 113230312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213032311 - 2⁹ = 213031799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213032711) 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, 106516155 + 106516156.

It is an arithmetic number, because the mean of its divisors is an integer number (106516156).

Almost surely, 2^213032311 is an apocalyptic number.

213032311 is a deficient number, since it is larger than the sum of its proper divisors (1).

213032311 is an equidigital number, since it uses as much as digits as its factorization.

213032311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 213032311 is about 14595.6264339699. The cubic root of 213032311 is about 597.2394583094.

Adding to 213032311 its reverse (113230312), we get a palindrome (326262623).

The spelling of 213032311 in words is "two hundred thirteen million, thirty-two thousand, three hundred eleven".