1300103231261 has 2 divisors, whose sum is σ = 1300103231262. Its totient is φ = 1300103231260.

The previous prime is 1300103231183. The next prime is 1300103231341. The reversal of 1300103231261 is 1621323010031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 914306965636 + 385796265625 = 956194^2 + 621125^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300103231261 - 2²⁶ = 1300036122397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1300103231561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650051615630 + 650051615631.

It is an arithmetic number, because the mean of its divisors is an integer number (650051615631).

Almost surely, 2^{1300103231261} is an apocalyptic number.

It is an amenable number.

1300103231261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300103231261 is an equidigital number, since it uses as much as digits as its factorization.

1300103231261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1300103231261 its reverse (1621323010031), we get a palindrome (2921426241292).

The spelling of 1300103231261 in words is "one trillion, three hundred billion, one hundred three million, two hundred thirty-one thousand, two hundred sixty-one".