31485506 has 16 divisors (see below), whose sum is σ = 50972544. Its totient is φ = 14499984.

The previous prime is 31485497. The next prime is 31485533. The reversal of 31485506 is 60558413.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14231 + ... + 16293.

It is an arithmetic number, because the mean of its divisors is an integer number (3185784).

Almost surely, 2^31485506 is an apocalyptic number.

31485506 is a deficient number, since it is larger than the sum of its proper divisors (19487038).

31485506 is a wasteful number, since it uses less digits than its factorization.

31485506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 31485506 is about 5611.1947034477. The cubic root of 31485506 is about 315.7695336600.

The spelling of 31485506 in words is "thirty-one million, four hundred eighty-five thousand, five hundred six".