1244311243 has 12 divisors (see below), whose sum is σ = 1532610072. Its totient is φ = 1003813440.

The previous prime is 1244311231. The next prime is 1244311261. The reversal of 1244311243 is 3421134421.

It is a de Polignac number, because none of the positive numbers 2^k-1244311243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1244311283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 746053 + ... + 747718.

It is an arithmetic number, because the mean of its divisors is an integer number (127717506).

Almost surely, 2^1244311243 is an apocalyptic number.

1244311243 is a deficient number, since it is larger than the sum of its proper divisors (288298829).

1244311243 is a wasteful number, since it uses less digits than its factorization.

1244311243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493802 (or 1493795 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 1244311243 is about 35274.7961439893. The cubic root of 1244311243 is about 1075.5807190114.

Adding to 1244311243 its reverse (3421134421), we get a palindrome (4665445664).

The spelling of 1244311243 in words is "one billion, two hundred forty-four million, three hundred eleven thousand, two hundred forty-three".