213562093 has 2 divisors, whose sum is σ = 213562094. Its totient is φ = 213562092.

The previous prime is 213562051. The next prime is 213562163. The reversal of 213562093 is 390265312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212634724 + 927369 = 14582^2 + 963^2 .

It is a cyclic number.

It is not a de Polignac number, because 213562093 - 2²¹ = 211464941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213560093) 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, 106781046 + 106781047.

It is an arithmetic number, because the mean of its divisors is an integer number (106781047).

Almost surely, 2^213562093 is an apocalyptic number.

It is an amenable number.

213562093 is a deficient number, since it is larger than the sum of its proper divisors (1).

213562093 is an equidigital number, since it uses as much as digits as its factorization.

213562093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 213562093 is about 14613.7638204536. The cubic root of 213562093 is about 597.7341325498.

The spelling of 213562093 in words is "two hundred thirteen million, five hundred sixty-two thousand, ninety-three".