213312130444 has 48 divisors (see below), whose sum is σ = 433070297856. Its totient is φ = 90044856000.

The previous prime is 213312130441. The next prime is 213312130483. The reversal of 213312130444 is 444031213312.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (213312130441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630594 + ... + 907894.

It is an arithmetic number, because the mean of its divisors is an integer number (9022297872).

Almost surely, 2^213312130444 is an apocalyptic number.

It is an amenable number.

213312130444 is an abundant number, since it is smaller than the sum of its proper divisors (219758167412).

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

213312130444 is a wasteful number, since it uses less digits than its factorization.

213312130444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277726 (or 277724 counting only the distinct ones).

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

Adding to 213312130444 its reverse (444031213312), we get a palindrome (657343343756).

It can be divided in two parts, 21331 and 2130444, that added together give a triangular number (2151775 = T₂₀₇₄).

The spelling of 213312130444 in words is "two hundred thirteen billion, three hundred twelve million, one hundred thirty thousand, four hundred forty-four".