31318853 has 2 divisors, whose sum is σ = 31318854. Its totient is φ = 31318852.

The previous prime is 31318747. The next prime is 31318867. The reversal of 31318853 is 35881313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29408929 + 1909924 = 5423^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 31318853 - 2¹² = 31314757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31318883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15659426 + 15659427.

It is an arithmetic number, because the mean of its divisors is an integer number (15659427).

Almost surely, 2^31318853 is an apocalyptic number.

It is an amenable number.

31318853 is a deficient number, since it is larger than the sum of its proper divisors (1).

31318853 is an equidigital number, since it uses as much as digits as its factorization.

31318853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 31318853 is about 5596.3249548253. The cubic root of 31318853 is about 315.2114243682.

The spelling of 31318853 in words is "thirty-one million, three hundred eighteen thousand, eight hundred fifty-three".