16312122 has 12 divisors (see below), whose sum is σ = 35342970. Its totient is φ = 5437368.

The previous prime is 16312117. The next prime is 16312133. The reversal of 16312122 is 22121361.

It can be written as a sum of positive squares in only one way, i.e., 15848361 + 463761 = 3981^2 + 681^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 906229 = 16312122 / (1 + 6 + 3 + 1 + 2 + 1 + 2 + 2).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 16312095 and 16312104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 453097 + ... + 453132.

Almost surely, 2^16312122 is an apocalyptic number.

16312122 is an abundant number, since it is smaller than the sum of its proper divisors (19030848).

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

16312122 is a wasteful number, since it uses less digits than its factorization.

16312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906237 (or 906234 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 16312122 is about 4038.8268098546. The cubic root of 16312122 is about 253.6122071333.

Adding to 16312122 its reverse (22121361), we get a palindrome (38433483).

The spelling of 16312122 in words is "sixteen million, three hundred twelve thousand, one hundred twenty-two".