1301213191 has 2 divisors, whose sum is σ = 1301213192. Its totient is φ = 1301213190.

The previous prime is 1301213183. The next prime is 1301213227. The reversal of 1301213191 is 1913121031.

It is a weak prime.

It is an emirp because it is prime and its reverse (1913121031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1301213191 - 2³ = 1301213183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301213131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650606595 + 650606596.

It is an arithmetic number, because the mean of its divisors is an integer number (650606596).

Almost surely, 2^1301213191 is an apocalyptic number.

1301213191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301213191 is an equidigital number, since it uses as much as digits as its factorization.

1301213191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1301213191 is about 36072.3327634906. The cubic root of 1301213191 is about 1091.7322821259.

The spelling of 1301213191 in words is "one billion, three hundred one million, two hundred thirteen thousand, one hundred ninety-one".