312091736420 has 12 divisors (see below), whose sum is σ = 655392646524. Its totient is φ = 124836694560.

The previous prime is 312091736419. The next prime is 312091736423. The reversal of 312091736420 is 24637190213.

It can be written as a sum of positive squares in 2 ways, for example, as 233785788196 + 78305948224 = 483514^2 + 279832^2 .

It is not an unprimeable number, because it can be changed into a prime (312091736423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7802293391 + ... + 7802293430.

It is an arithmetic number, because the mean of its divisors is an integer number (54616053877).

Almost surely, 2^312091736420 is an apocalyptic number.

It is an amenable number.

312091736420 is an abundant number, since it is smaller than the sum of its proper divisors (343300910104).

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

312091736420 is a wasteful number, since it uses less digits than its factorization.

312091736420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15604586830 (or 15604586828 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 312091736420 in words is "three hundred twelve billion, ninety-one million, seven hundred thirty-six thousand, four hundred twenty".