2312744436 has 18 divisors (see below), whose sum is σ = 5846104082. Its totient is φ = 770914800.

The previous prime is 2312744431. The next prime is 2312744437. The reversal of 2312744436 is 6344472132.

It can be written as a sum of positive squares in only one way, i.e., 1575296100 + 737448336 = 39690^2 + 27156^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 64242901 = 2312744436 / (2 + 3 + 1 + 2 + 7 + 4 + 4 + 4 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 2312744436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312744431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32121415 + ... + 32121486.

Almost surely, 2^2312744436 is an apocalyptic number.

It is an amenable number.

2312744436 is an abundant number, since it is smaller than the sum of its proper divisors (3533359646).

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

2312744436 is a wasteful number, since it uses less digits than its factorization.

2312744436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64242911 (or 64242906 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 2312744436 is about 48091.0016115281. The cubic root of 2312744436 is about 1322.4397097549.

The spelling of 2312744436 in words is "two billion, three hundred twelve million, seven hundred forty-four thousand, four hundred thirty-six".