31130052 has 24 divisors (see below), whose sum is σ = 73869600. Its totient is φ = 10200576.

The previous prime is 31130051. The next prime is 31130081. The reversal of 31130052 is 25003113.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31130051) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21277 + ... + 22692.

It is an arithmetic number, because the mean of its divisors is an integer number (3077900).

Almost surely, 2^31130052 is an apocalyptic number.

It is an amenable number.

31130052 is an abundant number, since it is smaller than the sum of its proper divisors (42739548).

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

31130052 is a wasteful number, since it uses less digits than its factorization.

31130052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44035 (or 44033 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 31130052 is about 5579.4311538005. The cubic root of 31130052 is about 314.5767457280.

Adding to 31130052 its reverse (25003113), we get a palindrome (56133165).

The spelling of 31130052 in words is "thirty-one million, one hundred thirty thousand, fifty-two".