213331420444 has 12 divisors (see below), whose sum is σ = 385372888768. Its totient is φ = 103224880800.

The previous prime is 213331420441. The next prime is 213331420453. The reversal of 213331420444 is 444024133312.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213331420441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860207217 + ... + 860207464.

Almost surely, 2^213331420444 is an apocalyptic number.

It is an amenable number.

213331420444 is a deficient number, since it is larger than the sum of its proper divisors (172041468324).

213331420444 is a wasteful number, since it uses less digits than its factorization.

213331420444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720414716 (or 1720414714 counting only the distinct ones).

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

Adding to 213331420444 its reverse (444024133312), we get a palindrome (657355553756).

The spelling of 213331420444 in words is "two hundred thirteen billion, three hundred thirty-one million, four hundred twenty thousand, four hundred forty-four".