99381313 has 2 divisors, whose sum is σ = 99381314. Its totient is φ = 99381312.

The previous prime is 99381287. The next prime is 99381341. The reversal of 99381313 is 31318399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98962704 + 418609 = 9948^2 + 647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99381313 is a prime.

It is equal to p_5727817 and since 99381313 and 5727817 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (99381013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49690656 + 49690657.

It is an arithmetic number, because the mean of its divisors is an integer number (49690657).

Almost surely, 2^99381313 is an apocalyptic number.

It is an amenable number.

99381313 is a deficient number, since it is larger than the sum of its proper divisors (1).

99381313 is an equidigital number, since it uses as much as digits as its factorization.

99381313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The square root of 99381313 is about 9969.0176547140. The cubic root of 99381313 is about 463.1996722380.

The spelling of 99381313 in words is "ninety-nine million, three hundred eighty-one thousand, three hundred thirteen".