213540463 has 2 divisors, whose sum is σ = 213540464. Its totient is φ = 213540462.

The previous prime is 213540419. The next prime is 213540469. The reversal of 213540463 is 364045312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213540463 - 2⁹ = 213539951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213540469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106770231 + 106770232.

It is an arithmetic number, because the mean of its divisors is an integer number (106770232).

Almost surely, 2^213540463 is an apocalyptic number.

213540463 is a deficient number, since it is larger than the sum of its proper divisors (1).

213540463 is an equidigital number, since it uses as much as digits as its factorization.

213540463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 213540463 is about 14613.0237459603. The cubic root of 213540463 is about 597.7139519618.

Adding to 213540463 its reverse (364045312), we get a palindrome (577585775).

The spelling of 213540463 in words is "two hundred thirteen million, five hundred forty thousand, four hundred sixty-three".