31540052 has 12 divisors (see below), whose sum is σ = 57098580. Its totient is φ = 15226176.

The previous prime is 31540031. The next prime is 31540063. The reversal of 31540052 is 25004513.

It can be written as a sum of positive squares in 2 ways, for example, as 5692996 + 25847056 = 2386^2 + 5084^2 .

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 135833 + ... + 136064.

It is an arithmetic number, because the mean of its divisors is an integer number (4758215).

Almost surely, 2^31540052 is an apocalyptic number.

It is an amenable number.

31540052 is a deficient number, since it is larger than the sum of its proper divisors (25558528).

31540052 is a wasteful number, since it uses less digits than its factorization.

31540052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271930 (or 271928 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 31540052 is about 5616.0530624274. The cubic root of 31540052 is about 315.9517765433.

Adding to 31540052 its reverse (25004513), we get a palindrome (56544565).

The spelling of 31540052 in words is "thirty-one million, five hundred forty thousand, fifty-two".