31875485 has 4 divisors (see below), whose sum is σ = 38250588. Its totient is φ = 25500384.

The previous prime is 31875479. The next prime is 31875497. The reversal of 31875485 is 58457813.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4553956 + 27321529 = 2134^2 + 5227^2 .

It is a cyclic number.

It is not a de Polignac number, because 31875485 - 2¹⁶ = 31809949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3187544 + ... + 3187553.

It is an arithmetic number, because the mean of its divisors is an integer number (9562647).

Almost surely, 2^31875485 is an apocalyptic number.

It is an amenable number.

31875485 is a deficient number, since it is larger than the sum of its proper divisors (6375103).

31875485 is an equidigital number, since it uses as much as digits as its factorization.

31875485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375102.

The product of its digits is 134400, while the sum is 41.

The square root of 31875485 is about 5645.8378474767. The cubic root of 31875485 is about 317.0678933881.

The spelling of 31875485 in words is "thirty-one million, eight hundred seventy-five thousand, four hundred eighty-five".