1301125013 has 4 divisors (see below), whose sum is σ = 1301232480. Its totient is φ = 1301017548.

The previous prime is 1301124977. The next prime is 1301125051. The reversal of 1301125013 is 3105211031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1301125013 - 2⁶ = 1301124949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1301124982 and 1301125000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301125213) 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 in 3 ways as a sum of consecutive naturals, for example, 32873 + ... + 60686.

It is an arithmetic number, because the mean of its divisors is an integer number (325308120).

Almost surely, 2^1301125013 is an apocalyptic number.

It is an amenable number.

1301125013 is a deficient number, since it is larger than the sum of its proper divisors (107467).

1301125013 is an equidigital number, since it uses as much as digits as its factorization.

1301125013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107466.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1301125013 is about 36071.1105041140. The cubic root of 1301125013 is about 1091.7076207959.

Adding to 1301125013 its reverse (3105211031), we get a palindrome (4406336044).

The spelling of 1301125013 in words is "one billion, three hundred one million, one hundred twenty-five thousand, thirteen".