311204432449 has 3 divisors (see below), whose sum is σ = 311204990307. Its totient is φ = 311203874592.

The previous prime is 311204432437. The next prime is 311204432501. The reversal of 311204432449 is 944234402113.

The square root of 311204432449 is 557857.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 944234402113 = 997 ⋅947075629.

It can be written as a sum of positive squares in only one way, i.e., 168900450625 + 142303981824 = 410975^2 + 377232^2 .

It is not a de Polignac number, because 311204432449 - 2⁵ = 311204432417 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311204432249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 278929 + ... + 836785.

It is an arithmetic number, because the mean of its divisors is an integer number (103734996769).

Almost surely, 2^311204432449 is an apocalyptic number.

311204432449 is the 557857-th square number.

311204432449 is the 278929-th centered octagonal number.

It is an amenable number.

311204432449 is a deficient number, since it is larger than the sum of its proper divisors (557858).

311204432449 is an frugal number, since it uses more digits than its factorization.

311204432449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115714 (or 557857 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

It can be divided in two parts, 311204432 and 449, that added together give a square (311204881 = 17641²).

The spelling of 311204432449 in words is "three hundred eleven billion, two hundred four million, four hundred thirty-two thousand, four hundred forty-nine".