31130353 has 2 divisors, whose sum is σ = 31130354. Its totient is φ = 31130352.

The previous prime is 31130327. The next prime is 31130377. The reversal of 31130353 is 35303113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21594609 + 9535744 = 4647^2 + 3088^2 .

It is a cyclic number.

It is not a de Polignac number, because 31130353 - 2⁹ = 31129841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31130353.

It is not a weakly prime, because it can be changed into another prime (31130453) 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 as a sum of consecutive naturals, namely, 15565176 + 15565177.

It is an arithmetic number, because the mean of its divisors is an integer number (15565177).

Almost surely, 2^31130353 is an apocalyptic number.

It is an amenable number.

31130353 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130353 is an equidigital number, since it uses as much as digits as its factorization.

31130353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 19.

The square root of 31130353 is about 5579.4581278113. The cubic root of 31130353 is about 314.5777596174.

Adding to 31130353 its reverse (35303113), we get a palindrome (66433466).

The spelling of 31130353 in words is "thirty-one million, one hundred thirty thousand, three hundred fifty-three".