1312204244 has 24 divisors (see below), whose sum is σ = 2474745000. Its totient is φ = 605205504.

The previous prime is 1312204213. The next prime is 1312204247. The reversal of 1312204244 is 4424022131.

It can be written as a sum of positive squares in 4 ways, for example, as 315844 + 1311888400 = 562^2 + 36220^2 .

It is a super-2 number, since 2×1312204244² = 3443759955943223072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312204247) 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, 72632 + ... + 88880.

It is an arithmetic number, because the mean of its divisors is an integer number (103114375).

Almost surely, 2^1312204244 is an apocalyptic number.

It is an amenable number.

1312204244 is a deficient number, since it is larger than the sum of its proper divisors (1162540756).

1312204244 is a wasteful number, since it uses less digits than its factorization.

1312204244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17819 (or 17817 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1312204244 is about 36224.3598149091. The cubic root of 1312204244 is about 1094.7975394884.

Adding to 1312204244 its reverse (4424022131), we get a palindrome (5736226375).

The spelling of 1312204244 in words is "one billion, three hundred twelve million, two hundred four thousand, two hundred forty-four".