31130652 has 24 divisors (see below), whose sum is σ = 83015296. Its totient is φ = 8894448.

The previous prime is 31130651. The next prime is 31130657. The reversal of 31130652 is 25603113.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130651) 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, 185218 + ... + 185385.

Almost surely, 2^31130652 is an apocalyptic number.

It is an amenable number.

31130652 is an abundant number, since it is smaller than the sum of its proper divisors (51884644).

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

31130652 is a wasteful number, since it uses less digits than its factorization.

31130652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370617 (or 370615 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 31130652 is about 5579.4849224637. The cubic root of 31130652 is about 314.5787667636.

Adding to 31130652 its reverse (25603113), we get a palindrome (56733765).

The spelling of 31130652 in words is "thirty-one million, one hundred thirty thousand, six hundred fifty-two".