213144013432 has 32 divisors (see below), whose sum is σ = 457613889120. Its totient is φ = 91172090880.

The previous prime is 213144013387. The next prime is 213144013493. The reversal of 213144013432 is 234310441312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 213144013432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3623553 + ... + 3681904.

It is an arithmetic number, because the mean of its divisors is an integer number (14300434035).

Almost surely, 2^213144013432 is an apocalyptic number.

It is an amenable number.

213144013432 is an abundant number, since it is smaller than the sum of its proper divisors (244469875688).

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

213144013432 is a wasteful number, since it uses less digits than its factorization.

213144013432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7305991 (or 7305987 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 213144013432 its reverse (234310441312), we get a palindrome (447454454744).

The spelling of 213144013432 in words is "two hundred thirteen billion, one hundred forty-four million, thirteen thousand, four hundred thirty-two".