213410657 has 2 divisors, whose sum is σ = 213410658. Its totient is φ = 213410656.

The previous prime is 213410653. The next prime is 213410671. The reversal of 213410657 is 756014312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182763361 + 30647296 = 13519^2 + 5536^2 .

It is a cyclic number.

It is not a de Polignac number, because 213410657 - 2² = 213410653 is a prime.

It is not a weakly prime, because it can be changed into another prime (213410653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106705328 + 106705329.

It is an arithmetic number, because the mean of its divisors is an integer number (106705329).

Almost surely, 2^213410657 is an apocalyptic number.

It is an amenable number.

213410657 is a deficient number, since it is larger than the sum of its proper divisors (1).

213410657 is an equidigital number, since it uses as much as digits as its factorization.

213410657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 213410657 is about 14608.5816217729. The cubic root of 213410657 is about 597.5928155388.

Adding to 213410657 its reverse (756014312), we get a palindrome (969424969).

The spelling of 213410657 in words is "two hundred thirteen million, four hundred ten thousand, six hundred fifty-seven".