309597241 has 8 divisors (see below), whose sum is σ = 318200904. Its totient is φ = 301006080.

The previous prime is 309597179. The next prime is 309597247. The reversal of 309597241 is 142795903.

It can be written as a sum of positive squares in 4 ways, for example, as 159289641 + 150307600 = 12621^2 + 12260^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 309597241 - 2¹¹ = 309595193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 309597194 and 309597203.

It is not an unprimeable number, because it can be changed into a prime (309597247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70881 + ... + 75121.

It is an arithmetic number, because the mean of its divisors is an integer number (39775113).

Almost surely, 2^309597241 is an apocalyptic number.

It is an amenable number.

309597241 is a deficient number, since it is larger than the sum of its proper divisors (8603663).

309597241 is a wasteful number, since it uses less digits than its factorization.

309597241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 309597241 is about 17595.3755572309. The cubic root of 309597241 is about 676.4967179251.

The spelling of 309597241 in words is "three hundred nine million, five hundred ninety-seven thousand, two hundred forty-one".