1243312422 has 32 divisors (see below), whose sum is σ = 2716035840. Its totient is φ = 376295520.

The previous prime is 1243312417. The next prime is 1243312423. The reversal of 1243312422 is 2242133421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1243312392 and 1243312401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243312423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44148 + ... + 66600.

It is an arithmetic number, because the mean of its divisors is an integer number (84876120).

Almost surely, 2^1243312422 is an apocalyptic number.

1243312422 is an abundant number, since it is smaller than the sum of its proper divisors (1472723418).

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

1243312422 is a wasteful number, since it uses less digits than its factorization.

1243312422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23308.

The product of its digits is 2304, while the sum is 24.

The square root of 1243312422 is about 35260.6355870112. The cubic root of 1243312422 is about 1075.2928488617.

Adding to 1243312422 its reverse (2242133421), we get a palindrome (3485445843).

The spelling of 1243312422 in words is "one billion, two hundred forty-three million, three hundred twelve thousand, four hundred twenty-two".