309141306 has 32 divisors (see below), whose sum is σ = 688538880. Its totient is φ = 102813408.

The previous prime is 309141293. The next prime is 309141317. The reversal of 309141306 is 603141903.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 309141306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18415 + ... + 30941.

It is an arithmetic number, because the mean of its divisors is an integer number (21516840).

Almost surely, 2^309141306 is an apocalyptic number.

309141306 is an abundant number, since it is smaller than the sum of its proper divisors (379397574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

309141306 is a wasteful number, since it uses less digits than its factorization.

309141306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12995 (or 12989 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 309141306 is about 17582.4146805836. The cubic root of 309141306 is about 676.1644689860.

The spelling of 309141306 in words is "three hundred nine million, one hundred forty-one thousand, three hundred six".