213213431448 has 24 divisors (see below), whose sum is σ = 577453043700. Its totient is φ = 71071143792.

The previous prime is 213213431447. The next prime is 213213431489. The reversal of 213213431448 is 844134312312.

213213431448 is a `hidden beast` number, since 2 + 1 + 3 + 213 + 431 + 4 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213213431441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1480648758 + ... + 1480648901.

Almost surely, 2^213213431448 is an apocalyptic number.

It is an amenable number.

213213431448 is an abundant number, since it is smaller than the sum of its proper divisors (364239612252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213213431448 is a wasteful number, since it uses less digits than its factorization.

213213431448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961297671 (or 2961297664 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The spelling of 213213431448 in words is "two hundred thirteen billion, two hundred thirteen million, four hundred thirty-one thousand, four hundred forty-eight".