213232505344 has 20 divisors (see below), whose sum is σ = 426048541974. Its totient is φ = 106616252416.

The previous prime is 213232505309. The next prime is 213232505357. The reversal of 213232505344 is 443505232312.

It can be written as a sum of positive squares in only one way, i.e., 198659186944 + 14573318400 = 445712^2 + 120720^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208234357 + ... + 208235380.

Almost surely, 2^213232505344 is an apocalyptic number.

It is an amenable number.

213232505344 is a deficient number, since it is larger than the sum of its proper divisors (212816036630).

213232505344 is an frugal number, since it uses more digits than its factorization.

213232505344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416469755 (or 416469739 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 213232505344 its reverse (443505232312), we get a palindrome (656737737656).

The spelling of 213232505344 in words is "two hundred thirteen billion, two hundred thirty-two million, five hundred five thousand, three hundred forty-four".