309081096 has 40 divisors (see below), whose sum is σ = 865715070. Its totient is φ = 103026816.

The previous prime is 309081077. The next prime is 309081121. The reversal of 309081096 is 690180903.

309081096 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 306740196 + 2340900 = 17514^2 + 1530^2 .

It is a super-2 number, since 2×309081096² = 191062247809122432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 309081096.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 237841 + ... + 239136.

Almost surely, 2^309081096 is an apocalyptic number.

309081096 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

309081096 is an abundant number, since it is smaller than the sum of its proper divisors (556633974).

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

309081096 is a wasteful number, since it uses less digits than its factorization.

309081096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476995 (or 476982 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 309081096 is about 17580.7023750475. The cubic root of 309081096 is about 676.1205683433.

The spelling of 309081096 in words is "three hundred nine million, eighty-one thousand, ninety-six".