312005435020 has 12 divisors (see below), whose sum is σ = 655211413584. Its totient is φ = 124802174000.

The previous prime is 312005434991. The next prime is 312005435029. The reversal of 312005435020 is 20534500213.

It is not an unprimeable number, because it can be changed into a prime (312005435029) 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, 7800135856 + ... + 7800135895.

It is an arithmetic number, because the mean of its divisors is an integer number (54600951132).

Almost surely, 2^312005435020 is an apocalyptic number.

It is an amenable number.

312005435020 is an abundant number, since it is smaller than the sum of its proper divisors (343205978564).

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

312005435020 is a wasteful number, since it uses less digits than its factorization.

312005435020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15600271760 (or 15600271758 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 312005435020 its reverse (20534500213), we get a palindrome (332539935233).

The spelling of 312005435020 in words is "three hundred twelve billion, five million, four hundred thirty-five thousand, twenty".