31330312093 has 2 divisors, whose sum is σ = 31330312094. Its totient is φ = 31330312092.

The previous prime is 31330312019. The next prime is 31330312127. The reversal of 31330312093 is 39021303313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26541948889 + 4788363204 = 162917^2 + 69198^2 .

It is an emirp because it is prime and its reverse (39021303313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31330312093 - 2¹⁷ = 31330181021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31330312003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15665156046 + 15665156047.

It is an arithmetic number, because the mean of its divisors is an integer number (15665156047).

Almost surely, 2^31330312093 is an apocalyptic number.

It is an amenable number.

31330312093 is a deficient number, since it is larger than the sum of its proper divisors (1).

31330312093 is an equidigital number, since it uses as much as digits as its factorization.

31330312093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 28.

The spelling of 31330312093 in words is "thirty-one billion, three hundred thirty million, three hundred twelve thousand, ninety-three".