213134544 has 80 divisors (see below), whose sum is σ = 699181440. Its totient is φ = 60894720.

The previous prime is 213134539. The next prime is 213134557. The reversal of 213134544 is 445431312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32217 + ... + 38264.

It is an arithmetic number, because the mean of its divisors is an integer number (8739768).

Almost surely, 2^213134544 is an apocalyptic number.

213134544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213134544 is an abundant number, since it is smaller than the sum of its proper divisors (486046896).

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

213134544 is a wasteful number, since it uses less digits than its factorization.

213134544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70505 (or 70493 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 213134544 is about 14599.1281931491. The cubic root of 213134544 is about 597.3349803092.

Adding to 213134544 its reverse (445431312), we get a palindrome (658565856).

The spelling of 213134544 in words is "two hundred thirteen million, one hundred thirty-four thousand, five hundred forty-four".