220312 has 8 divisors (see below), whose sum is σ = 413100. Its totient is φ = 110152.

The previous prime is 220307. The next prime is 220327. The reversal of 220312 is 213022.

220312 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

220312 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13762 + ... + 13777.

2²²⁰³¹² is an apocalyptic number.

It is an amenable number.

220312 is a deficient number, since it is larger than the sum of its proper divisors (192788).

220312 is a wasteful number, since it uses less digits than its factorization.

220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27545 (or 27541 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 220312 is about 469.3740512640. The cubic root of 220312 is about 60.3966315388.

Adding to 220312 its reverse (213022), we get a palindrome (433334).

The spelling of 220312 in words is "two hundred twenty thousand, three hundred twelve", and thus it is an iban number.