1312051427 has 2 divisors, whose sum is σ = 1312051428. Its totient is φ = 1312051426.

The previous prime is 1312051417. The next prime is 1312051453. The reversal of 1312051427 is 7241502131.

It is an a-pointer prime, because the next prime (1312051453) can be obtained adding 1312051427 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312051427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312051396 and 1312051405.

It is not a weakly prime, because it can be changed into another prime (1312051417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656025713 + 656025714.

It is an arithmetic number, because the mean of its divisors is an integer number (656025714).

Almost surely, 2^1312051427 is an apocalyptic number.

1312051427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312051427 is an equidigital number, since it uses as much as digits as its factorization.

1312051427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1312051427 is about 36222.2504408547. The cubic root of 1312051427 is about 1094.7550384394.

Adding to 1312051427 its reverse (7241502131), we get a palindrome (8553553558).

The spelling of 1312051427 in words is "one billion, three hundred twelve million, fifty-one thousand, four hundred twenty-seven".