31073270509 has 2 divisors, whose sum is σ = 31073270510. Its totient is φ = 31073270508.

The previous prime is 31073270507. The next prime is 31073270521. The reversal of 31073270509 is 90507237013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22465513225 + 8607757284 = 149885^2 + 92778^2 .

It is a cyclic number.

It is not a de Polignac number, because 31073270509 - 2¹ = 31073270507 is a prime.

Together with 31073270507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31073270507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15536635254 + 15536635255.

It is an arithmetic number, because the mean of its divisors is an integer number (15536635255).

Almost surely, 2^31073270509 is an apocalyptic number.

It is an amenable number.

31073270509 is a deficient number, since it is larger than the sum of its proper divisors (1).

31073270509 is an equidigital number, since it uses as much as digits as its factorization.

31073270509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 37.

The spelling of 31073270509 in words is "thirty-one billion, seventy-three million, two hundred seventy thousand, five hundred nine".