31080047 has 2 divisors, whose sum is σ = 31080048. Its totient is φ = 31080046.

The previous prime is 31080041. The next prime is 31080121. The reversal of 31080047 is 74008013.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31080047 - 2⁴ = 31080031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31080041) 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, 15540023 + 15540024.

It is an arithmetic number, because the mean of its divisors is an integer number (15540024).

Almost surely, 2^31080047 is an apocalyptic number.

31080047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31080047 is an equidigital number, since it uses as much as digits as its factorization.

31080047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 31080047 is about 5574.9481611940. The cubic root of 31080047 is about 314.4082178971.

The spelling of 31080047 in words is "thirty-one million, eighty thousand, forty-seven".