309864349132 has 24 divisors (see below), whose sum is σ = 598218419232. Its totient is φ = 139526160000.

The previous prime is 309864349129. The next prime is 309864349133. The reversal of 309864349132 is 231943468903.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 309864349132.

It is not an unprimeable number, because it can be changed into a prime (309864349133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72667744 + ... + 72672007.

It is an arithmetic number, because the mean of its divisors is an integer number (24925767468).

Almost surely, 2^309864349132 is an apocalyptic number.

It is an amenable number.

309864349132 is a deficient number, since it is larger than the sum of its proper divisors (288354070100).

309864349132 is a wasteful number, since it uses less digits than its factorization.

309864349132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145339809 (or 145339807 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 309864349132 in words is "three hundred nine billion, eight hundred sixty-four million, three hundred forty-nine thousand, one hundred thirty-two".