1300001231 has 2 divisors, whose sum is σ = 1300001232. Its totient is φ = 1300001230.

The previous prime is 1300001177. The next prime is 1300001249. The reversal of 1300001231 is 1321000031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1300001231 - 2⁶ = 1300001167 is a prime.

It is a super-2 number, since 2×1300001231² = 3380006401203030722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1300001251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650000615 + 650000616.

It is an arithmetic number, because the mean of its divisors is an integer number (650000616).

Almost surely, 2^1300001231 is an apocalyptic number.

1300001231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300001231 is an equidigital number, since it uses as much as digits as its factorization.

1300001231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1300001231 is about 36055.5298255344. The cubic root of 1300001231 is about 1091.3932275494.

Adding to 1300001231 its reverse (1321000031), we get a palindrome (2621001262).

The spelling of 1300001231 in words is "one billion, three hundred million, one thousand, two hundred thirty-one".