1310520451 has 2 divisors, whose sum is σ = 1310520452. Its totient is φ = 1310520450.

The previous prime is 1310520439. The next prime is 1310520481. The reversal of 1310520451 is 1540250131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310520451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1310520481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655260225 + 655260226.

It is an arithmetic number, because the mean of its divisors is an integer number (655260226).

Almost surely, 2^1310520451 is an apocalyptic number.

1310520451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310520451 is an equidigital number, since it uses as much as digits as its factorization.

1310520451 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 22.

The square root of 1310520451 is about 36201.1111846032. Note that the first 4 decimals coincide. The cubic root of 1310520451 is about 1094.3290652956.

Adding to 1310520451 its reverse (1540250131), we get a palindrome (2850770582).

The spelling of 1310520451 in words is "one billion, three hundred ten million, five hundred twenty thousand, four hundred fifty-one".