2131228699 has 2 divisors, whose sum is σ = 2131228700. Its totient is φ = 2131228698.

The previous prime is 2131228643. The next prime is 2131228709. The reversal of 2131228699 is 9968221312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131228699 - 2⁷ = 2131228571 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131228609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065614349 + 1065614350.

It is an arithmetic number, because the mean of its divisors is an integer number (1065614350).

Almost surely, 2^2131228699 is an apocalyptic number.

2131228699 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131228699 is an equidigital number, since it uses as much as digits as its factorization.

2131228699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 2131228699 is about 46165.2325782076. The cubic root of 2131228699 is about 1286.8957064125.

The spelling of 2131228699 in words is "two billion, one hundred thirty-one million, two hundred twenty-eight thousand, six hundred ninety-nine".