309020141 has 8 divisors (see below), whose sum is σ = 312316224. Its totient is φ = 305740800.

The previous prime is 309020087. The next prime is 309020171. The reversal of 309020141 is 141020903.

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 309020141 - 2²² = 304825837 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 (309020171) 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, 34826 + ... + 42788.

It is an arithmetic number, because the mean of its divisors is an integer number (39039528).

Almost surely, 2^309020141 is an apocalyptic number.

It is an amenable number.

309020141 is a deficient number, since it is larger than the sum of its proper divisors (3296083).

309020141 is a wasteful number, since it uses less digits than its factorization.

309020141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 309020141 is about 17578.9687126407. The cubic root of 309020141 is about 676.0761186942.

The spelling of 309020141 in words is "three hundred nine million, twenty thousand, one hundred forty-one".