49131317 has 2 divisors, whose sum is σ = 49131318. Its totient is φ = 49131316.

The previous prime is 49131287. The next prime is 49131389. The reversal of 49131317 is 71313194.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45778756 + 3352561 = 6766^2 + 1831^2 .

It is a cyclic number.

It is not a de Polignac number, because 49131317 - 2¹⁶ = 49065781 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49131317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49131217) 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, 24565658 + 24565659.

It is an arithmetic number, because the mean of its divisors is an integer number (24565659).

Almost surely, 2^49131317 is an apocalyptic number.

It is an amenable number.

49131317 is a deficient number, since it is larger than the sum of its proper divisors (1).

49131317 is an equidigital number, since it uses as much as digits as its factorization.

49131317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 49131317 is about 7009.3735098081. The cubic root of 49131317 is about 366.2571699296.

The spelling of 49131317 in words is "forty-nine million, one hundred thirty-one thousand, three hundred seventeen".