31485071 has 16 divisors (see below), whose sum is σ = 35458560. Its totient is φ = 27780480.

The previous prime is 31485067. The next prime is 31485079. The reversal of 31485071 is 17058413.

It is a cyclic number.

It is not a de Polignac number, because 31485071 - 2² = 31485067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31485079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34106 + ... + 35016.

It is an arithmetic number, because the mean of its divisors is an integer number (2216160).

Almost surely, 2^31485071 is an apocalyptic number.

31485071 is a deficient number, since it is larger than the sum of its proper divisors (3973489).

31485071 is a wasteful number, since it uses less digits than its factorization.

31485071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 31485071 is about 5611.1559415151. The cubic root of 31485071 is about 315.7680794419.

The spelling of 31485071 in words is "thirty-one million, four hundred eighty-five thousand, seventy-one".