31268099 has 2 divisors, whose sum is σ = 31268100. Its totient is φ = 31268098.

The previous prime is 31268093. The next prime is 31268137. The reversal of 31268099 is 99086213.

It is an a-pointer prime, because the next prime (31268137) can be obtained adding 31268099 to its sum of digits (38).

It is a weak prime.

It is an emirp because it is prime and its reverse (99086213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31268099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31268093) 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, 15634049 + 15634050.

It is an arithmetic number, because the mean of its divisors is an integer number (15634050).

Almost surely, 2^31268099 is an apocalyptic number.

31268099 is a deficient number, since it is larger than the sum of its proper divisors (1).

31268099 is an equidigital number, since it uses as much as digits as its factorization.

31268099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 31268099 is about 5591.7885331976. The cubic root of 31268099 is about 315.0410595675.

The spelling of 31268099 in words is "thirty-one million, two hundred sixty-eight thousand, ninety-nine".