31130522 has 8 divisors (see below), whose sum is σ = 46780416. Its totient is φ = 15537052.

The previous prime is 31130513. The next prime is 31130527. The reversal of 31130522 is 22503113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31130522.

It is not an unprimeable number, because it can be changed into a prime (31130527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12698 + ... + 14949.

It is an arithmetic number, because the mean of its divisors is an integer number (5847552).

Almost surely, 2^31130522 is an apocalyptic number.

31130522 is a deficient number, since it is larger than the sum of its proper divisors (15649894).

31130522 is a wasteful number, since it uses less digits than its factorization.

31130522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28212.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 31130522 is about 5579.4732726307. The cubic root of 31130522 is about 314.5783288748.

Adding to 31130522 its reverse (22503113), we get a palindrome (53633635).

The spelling of 31130522 in words is "thirty-one million, one hundred thirty thousand, five hundred twenty-two".