304311132091 has 2 divisors, whose sum is σ = 304311132092. Its totient is φ = 304311132090.

The previous prime is 304311132079. The next prime is 304311132109. The reversal of 304311132091 is 190231113403.

Together with next prime (304311132109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 304311132091 - 2¹¹ = 304311130043 is a prime.

It is a super-2 number, since 2×304311132091² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (304311132491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152155566045 + 152155566046.

It is an arithmetic number, because the mean of its divisors is an integer number (152155566046).

Almost surely, 2^304311132091 is an apocalyptic number.

304311132091 is a deficient number, since it is larger than the sum of its proper divisors (1).

304311132091 is an equidigital number, since it uses as much as digits as its factorization.

304311132091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

Adding to 304311132091 its reverse (190231113403), we get a palindrome (494542245494).

The spelling of 304311132091 in words is "three hundred four billion, three hundred eleven million, one hundred thirty-two thousand, ninety-one".