312122 has 4 divisors (see below), whose sum is σ = 468186. Its totient is φ = 156060.

The previous prime is 312121. The next prime is 312161. The reversal of 312122 is 221213.

It is a happy number.

312122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221213 = 157 ⋅1409.

It can be written as a sum of positive squares in only one way, i.e., 160801 + 151321 = 401^2 + 389^2 .

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312122.

It is not an unprimeable number, because it can be changed into a prime (312121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78029 + ... + 78032.

2³¹²¹²² is an apocalyptic number.

312122 is a deficient number, since it is larger than the sum of its proper divisors (156064).

312122 is a wasteful number, since it uses less digits than its factorization.

312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156063.

The product of its digits is 24, while the sum is 11.

The square root of 312122 is about 558.6787985954. The cubic root of 312122 is about 67.8330680458.

Adding to 312122 its reverse (221213), we get a palindrome (533335).

Subtracting from 312122 its reverse (221213), we obtain a palindrome (90909).

It can be divided in two parts, 312 and 122, that added together give a palindrome (434).

The spelling of 312122 in words is "three hundred twelve thousand, one hundred twenty-two", and thus it is an iban number.