309671241021 has 12 divisors (see below), whose sum is σ = 463869678272. Its totient is φ = 206447493852.

The previous prime is 309671241017. The next prime is 309671241043. The reversal of 309671241021 is 120142176903.

It is not a de Polignac number, because 309671241021 - 2² = 309671241017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309671241221) 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 11 ways as a sum of consecutive naturals, for example, 637183381 + ... + 637183866.

Almost surely, 2^309671241021 is an apocalyptic number.

It is an amenable number.

309671241021 is a deficient number, since it is larger than the sum of its proper divisors (154198437251).

309671241021 is an equidigital number, since it uses as much as digits as its factorization.

309671241021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274367262 (or 1274367250 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 309671241021 in words is "three hundred nine billion, six hundred seventy-one million, two hundred forty-one thousand, twenty-one".