213444463 has 2 divisors, whose sum is σ = 213444464. Its totient is φ = 213444462.

The previous prime is 213444419. The next prime is 213444467. The reversal of 213444463 is 364444312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213444463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213444467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106722231 + 106722232.

It is an arithmetic number, because the mean of its divisors is an integer number (106722232).

Almost surely, 2^213444463 is an apocalyptic number.

213444463 is a deficient number, since it is larger than the sum of its proper divisors (1).

213444463 is an equidigital number, since it uses as much as digits as its factorization.

213444463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 31.

The square root of 213444463 is about 14609.7386355814. The cubic root of 213444463 is about 597.6243684087.

Adding to 213444463 its reverse (364444312), we get a palindrome (577888775).

The spelling of 213444463 in words is "two hundred thirteen million, four hundred forty-four thousand, four hundred sixty-three".