2312289785 has 16 divisors (see below), whose sum is σ = 3051772416. Its totient is φ = 1671204288.

The previous prime is 2312289769. The next prime is 2312289787. The reversal of 2312289785 is 5879822132.

It is not a de Polignac number, because 2312289785 - 2⁴ = 2312289769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (2312289787) 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 15 ways as a sum of consecutive naturals, for example, 375389 + ... + 381498.

It is an arithmetic number, because the mean of its divisors is an integer number (190735776).

Almost surely, 2^2312289785 is an apocalyptic number.

It is an amenable number.

2312289785 is a deficient number, since it is larger than the sum of its proper divisors (739482631).

2312289785 is a wasteful number, since it uses less digits than its factorization.

2312289785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756952.

The product of its digits is 483840, while the sum is 47.

The square root of 2312289785 is about 48086.2743930116. The cubic root of 2312289785 is about 1322.3530467799.

The spelling of 2312289785 in words is "two billion, three hundred twelve million, two hundred eighty-nine thousand, seven hundred eighty-five".