1310247137 has 4 divisors (see below), whose sum is σ = 1387320516. Its totient is φ = 1233173760.

The previous prime is 1310247119. The next prime is 1310247149. The reversal of 1310247137 is 7317420131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1029383056 + 280864081 = 32084^2 + 16759^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310247137 - 2⁶ = 1310247073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1310247157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38536664 + ... + 38536697.

It is an arithmetic number, because the mean of its divisors is an integer number (346830129).

Almost surely, 2^1310247137 is an apocalyptic number.

1310247137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1310247137 is a deficient number, since it is larger than the sum of its proper divisors (77073379).

1310247137 is an equidigital number, since it uses as much as digits as its factorization.

1310247137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77073378.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1310247137 is about 36197.3360483890. The cubic root of 1310247137 is about 1094.2529845169.

Adding to 1310247137 its reverse (7317420131), we get a palindrome (8627667268).

The spelling of 1310247137 in words is "one billion, three hundred ten million, two hundred forty-seven thousand, one hundred thirty-seven".