1312047248 has 20 divisors (see below), whose sum is σ = 2542662780. Its totient is φ = 655876224.

The previous prime is 1312047239. The next prime is 1312047257. The reversal of 1312047248 is 8427402131.

It is an interprime number because it is at equal distance from previous prime (1312047239) and next prime (1312047257).

It can be written as a sum of positive squares in 2 ways, for example, as 819562384 + 492484864 = 28628^2 + 22192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114818 + ... + 125726.

It is an arithmetic number, because the mean of its divisors is an integer number (127133139).

Almost surely, 2^1312047248 is an apocalyptic number.

It is an amenable number.

1312047248 is a deficient number, since it is larger than the sum of its proper divisors (1230615532).

1312047248 is a wasteful number, since it uses less digits than its factorization.

1312047248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18434 (or 18428 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1312047248 is about 36222.1927552709. The cubic root of 1312047248 is about 1094.7538761409.

Adding to 1312047248 its reverse (8427402131), we get a palindrome (9739449379).

The spelling of 1312047248 in words is "one billion, three hundred twelve million, forty-seven thousand, two hundred forty-eight".