1244232313 has 8 divisors (see below), whose sum is σ = 1251521640. Its totient is φ = 1236963840.

The previous prime is 1244232287. The next prime is 1244232361. The reversal of 1244232313 is 3132324421.

It can be written as a sum of positive squares in 4 ways, for example, as 536246649 + 707985664 = 23157^2 + 26608^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244232313 is a prime.

It is a super-2 number, since 2×1244232313² = 3096228097426659938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244232013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123573 + ... + 133261.

It is an arithmetic number, because the mean of its divisors is an integer number (156440205).

Almost surely, 2^1244232313 is an apocalyptic number.

It is an amenable number.

1244232313 is a deficient number, since it is larger than the sum of its proper divisors (7289327).

1244232313 is an equidigital number, since it uses as much as digits as its factorization.

1244232313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10427.

The product of its digits is 3456, while the sum is 25.

The square root of 1244232313 is about 35273.6773387749. The cubic root of 1244232313 is about 1075.5579762071.

Adding to 1244232313 its reverse (3132324421), we get a palindrome (4376556734).

It can be divided in two parts, 124423 and 2313, that added together give a square (126736 = 356²).

The spelling of 1244232313 in words is "one billion, two hundred forty-four million, two hundred thirty-two thousand, three hundred thirteen".