213443012403 has 12 divisors (see below), whose sum is σ = 308454611400. Its totient is φ = 142227016416.

The previous prime is 213443012399. The next prime is 213443012413. The reversal of 213443012403 is 304210344312.

213443012403 is a `hidden beast` number, since 213 + 4 + 4 + 30 + 12 + 403 = 666.

It is not a de Polignac number, because 213443012403 - 2² = 213443012399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213443012413) 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, 5673978 + ... + 5711471.

It is an arithmetic number, because the mean of its divisors is an integer number (25704550950).

Almost surely, 2^213443012403 is an apocalyptic number.

213443012403 is a deficient number, since it is larger than the sum of its proper divisors (95011598997).

213443012403 is a wasteful number, since it uses less digits than its factorization.

213443012403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11387538 (or 11387535 counting only the distinct ones).

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

Adding to 213443012403 its reverse (304210344312), we get a palindrome (517653356715).

The spelling of 213443012403 in words is "two hundred thirteen billion, four hundred forty-three million, twelve thousand, four hundred three".