309419141 has 4 divisors (see below), whose sum is σ = 315257292. Its totient is φ = 303580992.

The previous prime is 309419137. The next prime is 309419147. The reversal of 309419141 is 141914903.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 248188516 + 61230625 = 15754^2 + 7825^2 .

It is a cyclic number.

It is not a de Polignac number, because 309419141 - 2² = 309419137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 309419098 and 309419107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309419147) 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, 2918996 + ... + 2919101.

It is an arithmetic number, because the mean of its divisors is an integer number (78814323).

Almost surely, 2^309419141 is an apocalyptic number.

It is an amenable number.

309419141 is a deficient number, since it is larger than the sum of its proper divisors (5838151).

309419141 is an equidigital number, since it uses as much as digits as its factorization.

309419141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838150.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 309419141 is about 17590.3138402929. The cubic root of 309419141 is about 676.3669717471.

The spelling of 309419141 in words is "three hundred nine million, four hundred nineteen thousand, one hundred forty-one".