309486223956 has 48 divisors (see below), whose sum is σ = 888780953984. Its totient is φ = 81622740096.

The previous prime is 309486223901. The next prime is 309486223957. The reversal of 309486223956 is 659322684903.

It is a happy number.

It is a super-3 number, since 3×309486223956³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 309486223896 and 309486223905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309486223957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141705055 + ... + 141707238.

Almost surely, 2^309486223956 is an apocalyptic number.

It is an amenable number.

309486223956 is an abundant number, since it is smaller than the sum of its proper divisors (579294730028).

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

309486223956 is a wasteful number, since it uses less digits than its factorization.

309486223956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283412320 (or 283412318 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 57.

The spelling of 309486223956 in words is "three hundred nine billion, four hundred eighty-six million, two hundred twenty-three thousand, nine hundred fifty-six".