309141913 has 4 divisors (see below), whose sum is σ = 325412560. Its totient is φ = 292871268.

The previous prime is 309141907. The next prime is 309141929. The reversal of 309141913 is 319141903.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 309141913 - 2¹⁷ = 309010841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309141013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8135295 + ... + 8135332.

It is an arithmetic number, because the mean of its divisors is an integer number (81353140).

Almost surely, 2^309141913 is an apocalyptic number.

It is an amenable number.

309141913 is a deficient number, since it is larger than the sum of its proper divisors (16270647).

309141913 is a wasteful number, since it uses less digits than its factorization.

309141913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16270646.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 309141913 is about 17582.4319421404. The cubic root of 309141913 is about 676.1649115361.

The spelling of 309141913 in words is "three hundred nine million, one hundred forty-one thousand, nine hundred thirteen".