31141613 has 2 divisors, whose sum is σ = 31141614. Its totient is φ = 31141612.

The previous prime is 31141597. The next prime is 31141657. The reversal of 31141613 is 31614113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21325924 + 9815689 = 4618^2 + 3133^2 .

It is a cyclic number.

It is not a de Polignac number, because 31141613 - 2⁴ = 31141597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31143613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15570806 + 15570807.

It is an arithmetic number, because the mean of its divisors is an integer number (15570807).

Almost surely, 2^31141613 is an apocalyptic number.

It is an amenable number.

31141613 is a deficient number, since it is larger than the sum of its proper divisors (1).

31141613 is an equidigital number, since it uses as much as digits as its factorization.

31141613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 31141613 is about 5580.4670951454. The cubic root of 31141613 is about 314.6156831470.

Adding to 31141613 its reverse (31614113), we get a palindrome (62755726).

The spelling of 31141613 in words is "thirty-one million, one hundred forty-one thousand, six hundred thirteen".