299891131 has 2 divisors, whose sum is σ = 299891132. Its totient is φ = 299891130.

The previous prime is 299891113. The next prime is 299891143. The reversal of 299891131 is 131198992.

Together with previous prime (299891113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 299891131 - 2⁵ = 299891099 is a prime.

It is a super-2 number, since 2×299891131² = 179869380904918322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (299891171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149945565 + 149945566.

It is an arithmetic number, because the mean of its divisors is an integer number (149945566).

Almost surely, 2^299891131 is an apocalyptic number.

299891131 is a deficient number, since it is larger than the sum of its proper divisors (1).

299891131 is an equidigital number, since it uses as much as digits as its factorization.

299891131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 43.

The square root of 299891131 is about 17317.3650131884. The cubic root of 299891131 is about 669.3519619559.

The spelling of 299891131 in words is "two hundred ninety-nine million, eight hundred ninety-one thousand, one hundred thirty-one".