213440463 has 12 divisors (see below), whose sum is σ = 310346608. Its totient is φ = 141350400.

The previous prime is 213440459. The next prime is 213440467. The reversal of 213440463 is 364044312.

213440463 is a `hidden beast` number, since 213 + 440 + 4 + 6 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (213440459) and next prime (213440467).

It is not a de Polignac number, because 213440463 - 2² = 213440459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213440467) 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, 77170 + ... + 79887.

Almost surely, 2^213440463 is an apocalyptic number.

213440463 is a deficient number, since it is larger than the sum of its proper divisors (96906145).

213440463 is a wasteful number, since it uses less digits than its factorization.

213440463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157214 (or 157211 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 213440463 is about 14609.6017399517. The cubic root of 213440463 is about 597.6206351777.

Adding to 213440463 its reverse (364044312), we get a palindrome (577484775).

The spelling of 213440463 in words is "two hundred thirteen million, four hundred forty thousand, four hundred sixty-three".