213463057 has 2 divisors, whose sum is σ = 213463058. Its totient is φ = 213463056.

The previous prime is 213463039. The next prime is 213463079. The reversal of 213463057 is 750364312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141705216 + 71757841 = 11904^2 + 8471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213463057 is a prime.

It is not a weakly prime, because it can be changed into another prime (213463457) 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, 106731528 + 106731529.

It is an arithmetic number, because the mean of its divisors is an integer number (106731529).

Almost surely, 2^213463057 is an apocalyptic number.

It is an amenable number.

213463057 is a deficient number, since it is larger than the sum of its proper divisors (1).

213463057 is an equidigital number, since it uses as much as digits as its factorization.

213463057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 213463057 is about 14610.3749780764. The cubic root of 213463057 is about 597.6417217203.

The spelling of 213463057 in words is "two hundred thirteen million, four hundred sixty-three thousand, fifty-seven".