309120884148 has 12 divisors (see below), whose sum is σ = 721282063040. Its totient is φ = 103040294712.

The previous prime is 309120884147. The next prime is 309120884159. The reversal of 309120884148 is 841488021903.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 309120884097 and 309120884106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309120884147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12880036828 + ... + 12880036851.

Almost surely, 2^309120884148 is an apocalyptic number.

It is an amenable number.

309120884148 is an abundant number, since it is smaller than the sum of its proper divisors (412161178892).

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

309120884148 is a wasteful number, since it uses less digits than its factorization.

309120884148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25760073686 (or 25760073684 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 309120884148 in words is "three hundred nine billion, one hundred twenty million, eight hundred eighty-four thousand, one hundred forty-eight".