31875045 has 16 divisors (see below), whose sum is σ = 51865920. Its totient is φ = 16711424.

The previous prime is 31875029. The next prime is 31875047. The reversal of 31875045 is 54057813.

It is a cyclic number.

It is not a de Polignac number, because 31875045 - 2⁴ = 31875029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31874997 and 31875015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31875047) 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 15 ways as a sum of consecutive naturals, for example, 17124 + ... + 18893.

It is an arithmetic number, because the mean of its divisors is an integer number (3241620).

Almost surely, 2^31875045 is an apocalyptic number.

It is an amenable number.

31875045 is a deficient number, since it is larger than the sum of its proper divisors (19990875).

31875045 is a wasteful number, since it uses less digits than its factorization.

31875045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36084.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 31875045 is about 5645.7988805837. The cubic root of 31875045 is about 317.0664344768.

The spelling of 31875045 in words is "thirty-one million, eight hundred seventy-five thousand, forty-five".