151311191 has 2 divisors, whose sum is σ = 151311192. Its totient is φ = 151311190.

The previous prime is 151311151. The next prime is 151311221. The reversal of 151311191 is 191113151.

It is a strong prime.

It is an emirp because it is prime and its reverse (191113151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151311191 - 2²² = 147116887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151311151) 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, 75655595 + 75655596.

It is an arithmetic number, because the mean of its divisors is an integer number (75655596).

Almost surely, 2^151311191 is an apocalyptic number.

151311191 is a deficient number, since it is larger than the sum of its proper divisors (1).

151311191 is an equidigital number, since it uses as much as digits as its factorization.

151311191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135, while the sum is 23.

The square root of 151311191 is about 12300.8613926017. The cubic root of 151311191 is about 532.8729602292.

The spelling of 151311191 in words is "one hundred fifty-one million, three hundred eleven thousand, one hundred ninety-one".