1310421551 has 2 divisors, whose sum is σ = 1310421552. Its totient is φ = 1310421550.

The previous prime is 1310421503. The next prime is 1310421587. The reversal of 1310421551 is 1551240131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1310421551 - 2³⁰ = 236679727 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310421751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655210775 + 655210776.

It is an arithmetic number, because the mean of its divisors is an integer number (655210776).

Almost surely, 2^1310421551 is an apocalyptic number.

1310421551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310421551 is an equidigital number, since it uses as much as digits as its factorization.

1310421551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1310421551 is about 36199.7451786611. The cubic root of 1310421551 is about 1094.3015363173.

Adding to 1310421551 its reverse (1551240131), we get a palindrome (2861661682).

The spelling of 1310421551 in words is "one billion, three hundred ten million, four hundred twenty-one thousand, five hundred fifty-one".