31130120347 has 2 divisors, whose sum is σ = 31130120348. Its totient is φ = 31130120346.

The previous prime is 31130120323. The next prime is 31130120363. The reversal of 31130120347 is 74302103113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31130120347 is a prime.

It is not a weakly prime, because it can be changed into another prime (31130120387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565060173 + 15565060174.

It is an arithmetic number, because the mean of its divisors is an integer number (15565060174).

Almost surely, 2^31130120347 is an apocalyptic number.

31130120347 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130120347 is an equidigital number, since it uses as much as digits as its factorization.

31130120347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The spelling of 31130120347 in words is "thirty-one billion, one hundred thirty million, one hundred twenty thousand, three hundred forty-seven".