31240402099 has 2 divisors, whose sum is σ = 31240402100. Its totient is φ = 31240402098.

The previous prime is 31240401967. The next prime is 31240402103. The reversal of 31240402099 is 99020404213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31240402099 - 2⁹ = 31240401587 is a prime.

It is not a weakly prime, because it can be changed into another prime (31240402199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15620201049 + 15620201050.

It is an arithmetic number, because the mean of its divisors is an integer number (15620201050).

Almost surely, 2^31240402099 is an apocalyptic number.

31240402099 is a deficient number, since it is larger than the sum of its proper divisors (1).

31240402099 is an equidigital number, since it uses as much as digits as its factorization.

31240402099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 31240402099 in words is "thirty-one billion, two hundred forty million, four hundred two thousand, ninety-nine".