1301561011 has 2 divisors, whose sum is σ = 1301561012. Its totient is φ = 1301561010.

The previous prime is 1301560993. The next prime is 1301561029. The reversal of 1301561011 is 1101651031.

It is a balanced prime because it is at equal distance from previous prime (1301560993) and next prime (1301561029).

It is a cyclic number.

It is not a de Polignac number, because 1301561011 - 2⁹ = 1301560499 is a prime.

It is a super-2 number, since 2×1301561011² = 3388122130710684242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1301561011.

It is not a weakly prime, because it can be changed into another prime (1301561081) 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, 650780505 + 650780506.

It is an arithmetic number, because the mean of its divisors is an integer number (650780506).

Almost surely, 2^1301561011 is an apocalyptic number.

1301561011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301561011 is an equidigital number, since it uses as much as digits as its factorization.

1301561011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1301561011 is about 36077.1535878317. The cubic root of 1301561011 is about 1091.8295484042.

The spelling of 1301561011 in words is "one billion, three hundred one million, five hundred sixty-one thousand, eleven".