309698113 has 2 divisors, whose sum is σ = 309698114. Its totient is φ = 309698112.

The previous prime is 309698099. The next prime is 309698141. The reversal of 309698113 is 311896903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220433409 + 89264704 = 14847^2 + 9448^2 .

It is an emirp because it is prime and its reverse (311896903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 309698113 - 2²¹ = 307600961 is a prime.

It is equal to p_16749076 and since 309698113 and 16749076 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 (309698173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154849056 + 154849057.

It is an arithmetic number, because the mean of its divisors is an integer number (154849057).

Almost surely, 2^309698113 is an apocalyptic number.

It is an amenable number.

309698113 is a deficient number, since it is larger than the sum of its proper divisors (1).

309698113 is an equidigital number, since it uses as much as digits as its factorization.

309698113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 309698113 is about 17598.2417587667. The cubic root of 309698113 is about 676.5701812920.

The spelling of 309698113 in words is "three hundred nine million, six hundred ninety-eight thousand, one hundred thirteen".