31160052 has 120 divisors (see below), whose sum is σ = 101640000. Its totient is φ = 8087040.

The previous prime is 31160039. The next prime is 31160069. The reversal of 31160052 is 25006113.

31160052 is a `hidden beast` number, since 3 + 11 + 600 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 39 ways as a sum of consecutive naturals, for example, 24324 + ... + 25572.

It is an arithmetic number, because the mean of its divisors is an integer number (847000).

Almost surely, 2^31160052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31160052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50820000).

31160052 is an abundant number, since it is smaller than the sum of its proper divisors (70479948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31160052 is a wasteful number, since it uses less digits than its factorization.

31160052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 31160052 is about 5582.1189525126. The cubic root of 31160052 is about 314.6777657158.

Adding to 31160052 its reverse (25006113), we get a palindrome (56166165).

The spelling of 31160052 in words is "thirty-one million, one hundred sixty thousand, fifty-two".