31662045 has 36 divisors (see below), whose sum is σ = 56651868. Its totient is φ = 16348800.

The previous prime is 31662023. The next prime is 31662073. The reversal of 31662045 is 54026613.

31662045 is a `hidden beast` number, since 31 + 6 + 620 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5560164 + 26101881 = 2358^2 + 5109^2 .

It is not a de Polignac number, because 31662045 - 2⁵ = 31662013 is a prime.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 241630 + ... + 241760.

It is an arithmetic number, because the mean of its divisors is an integer number (1573663).

Almost surely, 2^31662045 is an apocalyptic number.

It is an amenable number.

31662045 is a deficient number, since it is larger than the sum of its proper divisors (24989823).

31662045 is a wasteful number, since it uses less digits than its factorization.

31662045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 31662045 is about 5626.9036778676. The cubic root of 31662045 is about 316.3586065346.

Adding to 31662045 its reverse (54026613), we get a palindrome (85688658).

The spelling of 31662045 in words is "thirty-one million, six hundred sixty-two thousand, forty-five".