12310722 has 18 divisors (see below), whose sum is σ = 26705523. Its totient is φ = 4098612.

The previous prime is 12310721. The next prime is 12310733. The reversal of 12310722 is 22701321.

It can be written as a sum of positive squares in only one way, i.e., 6155361 + 6155361 = 2481^2 + 2481^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2481.

It is a super-2 number, since 2×12310722² = 303107752322568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12310695 and 12310704.

It is not an unprimeable number, because it can be changed into a prime (12310721) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 14473 + ... + 15299.

Almost surely, 2^12310722 is an apocalyptic number.

12310722 is an abundant number, since it is smaller than the sum of its proper divisors (14394801).

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

12310722 is an frugal number, since it uses more digits than its factorization.

12310722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12310722 is about 3508.6638482476. The cubic root of 12310722 is about 230.9020780218.

Multiplying 12310722 by its sum of digits (18), we get a square (221592996 = 14886²).

12310722 divided by its sum of digits (18) gives a square (683929 = 827²).

The spelling of 12310722 in words is "twelve million, three hundred ten thousand, seven hundred twenty-two".