1301512243 has 2 divisors, whose sum is σ = 1301512244. Its totient is φ = 1301512242.

The previous prime is 1301512213. The next prime is 1301512253. The reversal of 1301512243 is 3422151031.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1301512243 - 2²⁹ = 764641331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1301512213) 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 as a sum of consecutive naturals, namely, 650756121 + 650756122.

It is an arithmetic number, because the mean of its divisors is an integer number (650756122).

Almost surely, 2^1301512243 is an apocalyptic number.

1301512243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301512243 is an equidigital number, since it uses as much as digits as its factorization.

1301512243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1301512243 is about 36076.4776966932. The cubic root of 1301512243 is about 1091.8159116998.

Adding to 1301512243 its reverse (3422151031), we get a palindrome (4723663274).

The spelling of 1301512243 in words is "one billion, three hundred one million, five hundred twelve thousand, two hundred forty-three".