201301999991 has 2 divisors, whose sum is σ = 201301999992. Its totient is φ = 201301999990.

The previous prime is 201301999967. The next prime is 201302000083. The reversal of 201301999991 is 199999103102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201301999991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201301999901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100650999995 + 100650999996.

It is an arithmetic number, because the mean of its divisors is an integer number (100650999996).

Almost surely, 2^201301999991 is an apocalyptic number.

201301999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

201301999991 is an equidigital number, since it uses as much as digits as its factorization.

201301999991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 354294, while the sum is 53.

The spelling of 201301999991 in words is "two hundred one billion, three hundred one million, nine hundred ninety-nine thousand, nine hundred ninety-one".