213626513 has 2 divisors, whose sum is σ = 213626514. Its totient is φ = 213626512.

The previous prime is 213626473. The next prime is 213626527. The reversal of 213626513 is 315626312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192987664 + 20638849 = 13892^2 + 4543^2 .

It is a cyclic number.

It is not a de Polignac number, because 213626513 - 2⁶ = 213626449 is a prime.

It is not a weakly prime, because it can be changed into another prime (213626533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106813256 + 106813257.

It is an arithmetic number, because the mean of its divisors is an integer number (106813257).

Almost surely, 2^213626513 is an apocalyptic number.

It is an amenable number.

213626513 is a deficient number, since it is larger than the sum of its proper divisors (1).

213626513 is an equidigital number, since it uses as much as digits as its factorization.

213626513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 213626513 is about 14615.9677407964. The cubic root of 213626513 is about 597.7942277368.

The spelling of 213626513 in words is "two hundred thirteen million, six hundred twenty-six thousand, five hundred thirteen".