31818044099 has 2 divisors, whose sum is σ = 31818044100. Its totient is φ = 31818044098.

The previous prime is 31818044087. The next prime is 31818044113. The reversal of 31818044099 is 99044081813.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31818044099 - 2⁸ = 31818043843 is a prime.

It is a super-3 number, since 3×31818044099³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (31818043099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15909022049 + 15909022050.

It is an arithmetic number, because the mean of its divisors is an integer number (15909022050).

Almost surely, 2^31818044099 is an apocalyptic number.

31818044099 is a deficient number, since it is larger than the sum of its proper divisors (1).

31818044099 is an equidigital number, since it uses as much as digits as its factorization.

31818044099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 31818044099 in words is "thirty-one billion, eight hundred eighteen million, forty-four thousand, ninety-nine".