309129842010 has 64 divisors (see below), whose sum is σ = 820445293440. Its totient is φ = 73913978880.

The previous prime is 309129842009. The next prime is 309129842017. The reversal of 309129842010 is 10248921903.

It is a super-2 number, since 2×309129842010² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 309129842010.

It is not an unprimeable number, because it can be changed into a prime (309129842017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6392055 + ... + 6440234.

It is an arithmetic number, because the mean of its divisors is an integer number (12819457710).

Almost surely, 2^309129842010 is an apocalyptic number.

309129842010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

309129842010 is an abundant number, since it is smaller than the sum of its proper divisors (511315451430).

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

309129842010 is a wasteful number, since it uses less digits than its factorization.

309129842010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12832383.

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 309129842010 in words is "three hundred nine billion, one hundred twenty-nine million, eight hundred forty-two thousand, ten".