31448713 has 2 divisors, whose sum is σ = 31448714. Its totient is φ = 31448712.

The previous prime is 31448707. The next prime is 31448717. The reversal of 31448713 is 31784413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19079424 + 12369289 = 4368^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 31448713 - 2⁹ = 31448201 is a prime.

It is not a weakly prime, because it can be changed into another prime (31448717) 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, 15724356 + 15724357.

It is an arithmetic number, because the mean of its divisors is an integer number (15724357).

Almost surely, 2^31448713 is an apocalyptic number.

It is an amenable number.

31448713 is a deficient number, since it is larger than the sum of its proper divisors (1).

31448713 is an equidigital number, since it uses as much as digits as its factorization.

31448713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 31448713 is about 5607.9152097727. The cubic root of 31448713 is about 315.6464861758.

The spelling of 31448713 in words is "thirty-one million, four hundred forty-eight thousand, seven hundred thirteen".