312041780449 has 9 divisors (see below), whose sum is σ = 362991925971. Its totient is φ = 267461031600.

The previous prime is 312041780443. The next prime is 312041780473. The reversal of 312041780449 is 944087140213.

The square root of 312041780449 is 558607.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 61401370849 + 250640409600 = 247793^2 + 500640^2 .

It is not a de Polignac number, because 312041780449 - 2¹¹ = 312041778401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312041780443) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3870349 + ... + 3950149.

It is an arithmetic number, because the mean of its divisors is an integer number (40332436219).

Almost surely, 2^312041780449 is an apocalyptic number.

312041780449 is the 558607-th square number.

312041780449 is the 279304-th centered octagonal number.

It is an amenable number.

312041780449 is a deficient number, since it is larger than the sum of its proper divisors (50950145522).

312041780449 is an frugal number, since it uses more digits than its factorization.

312041780449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159616 (or 79808 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 312041780449 in words is "three hundred twelve billion, forty-one million, seven hundred eighty thousand, four hundred forty-nine".