31475345806 has 16 divisors (see below), whose sum is σ = 47375952624. Its totient is φ = 15683447104.

The previous prime is 31475345789. The next prime is 31475345807. The reversal of 31475345806 is 60854357413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31475345807) 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 in 7 ways as a sum of consecutive naturals, for example, 738576 + ... + 780028.

It is an arithmetic number, because the mean of its divisors is an integer number (2960997039).

Almost surely, 2^31475345806 is an apocalyptic number.

31475345806 is a deficient number, since it is larger than the sum of its proper divisors (15900606818).

31475345806 is a wasteful number, since it uses less digits than its factorization.

31475345806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42755.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 31475345806 in words is "thirty-one billion, four hundred seventy-five million, three hundred forty-five thousand, eight hundred six".