213312532 has 12 divisors (see below), whose sum is σ = 395255700. Its totient is φ = 100382336.

The previous prime is 213312527. The next prime is 213312577. The reversal of 213312532 is 235213312.

It can be written as a sum of positive squares in 2 ways, for example, as 114190596 + 99121936 = 10686^2 + 9956^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1568407 + ... + 1568542.

It is an arithmetic number, because the mean of its divisors is an integer number (32937975).

Almost surely, 2^213312532 is an apocalyptic number.

It is an amenable number.

213312532 is a deficient number, since it is larger than the sum of its proper divisors (181943168).

213312532 is a wasteful number, since it uses less digits than its factorization.

213312532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136970 (or 3136968 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 213312532 is about 14605.2227644771. Note that the first 3 decimals coincide. The cubic root of 213312532 is about 597.5012115776.

Adding to 213312532 its reverse (235213312), we get a palindrome (448525844).

The spelling of 213312532 in words is "two hundred thirteen million, three hundred twelve thousand, five hundred thirty-two".