309730943097 has 16 divisors (see below), whose sum is σ = 485852460480. Its totient is φ = 194340983616.

The previous prime is 309730943087. The next prime is 309730943111. The reversal of 309730943097 is 790349037903.

309730943097 is a `hidden beast` number, since 3 + 0 + 97 + 30 + 9 + 430 + 97 = 666.

It is not a de Polignac number, because 309730943097 - 2¹⁵ = 309730910329 is a prime.

It is a super-2 number, since 2×309730943097² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (309730943017) 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 in 15 ways as a sum of consecutive naturals, for example, 337397083 + ... + 337398000.

It is an arithmetic number, because the mean of its divisors is an integer number (30365778780).

Almost surely, 2^309730943097 is an apocalyptic number.

It is an amenable number.

309730943097 is a deficient number, since it is larger than the sum of its proper divisors (176121517383).

309730943097 is a wasteful number, since it uses less digits than its factorization.

309730943097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674795109 (or 674795103 counting only the distinct ones).

The product of its (nonzero) digits is 3857868, while the sum is 54.

The spelling of 309730943097 in words is "three hundred nine billion, seven hundred thirty million, nine hundred forty-three thousand, ninety-seven".