309290771412 has 96 divisors (see below), whose sum is σ = 956261376000. Its totient is φ = 84526665696.

The previous prime is 309290771411. The next prime is 309290771431. The reversal of 309290771412 is 214177092903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309290771411) 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, 8876412 + ... + 8911187.

It is an arithmetic number, because the mean of its divisors is an integer number (9961056000).

Almost surely, 2^309290771412 is an apocalyptic number.

It is an amenable number.

309290771412 is an abundant number, since it is smaller than the sum of its proper divisors (646970604588).

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

309290771412 is a wasteful number, since it uses less digits than its factorization.

309290771412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17787642 (or 17787634 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 309290771412 in words is "three hundred nine billion, two hundred ninety million, seven hundred seventy-one thousand, four hundred twelve".