213411663 has 12 divisors (see below), whose sum is σ = 308541480. Its totient is φ = 142145136.

The previous prime is 213411637. The next prime is 213411697. The reversal of 213411663 is 366114312.

It is not a de Polignac number, because 213411663 - 2⁹ = 213411151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213411463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273 + ... + 20661.

It is an arithmetic number, because the mean of its divisors is an integer number (25711790).

Almost surely, 2^213411663 is an apocalyptic number.

213411663 is a deficient number, since it is larger than the sum of its proper divisors (95129817).

213411663 is a wasteful number, since it uses less digits than its factorization.

213411663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21558 (or 21555 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 213411663 is about 14608.6160535487. The cubic root of 213411663 is about 597.5937545381.

Adding to 213411663 its reverse (366114312), we get a palindrome (579525975).

It can be divided in two parts, 2134 and 11663, that multiplied together give a palindrome (24888842).

The spelling of 213411663 in words is "two hundred thirteen million, four hundred eleven thousand, six hundred sixty-three".