2312243778 has 32 divisors (see below), whose sum is σ = 4983031872. Its totient is φ = 711057600.

The previous prime is 2312243771. The next prime is 2312243789. The reversal of 2312243778 is 8773422132.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2312243771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149488 + ... + 164228.

It is an arithmetic number, because the mean of its divisors is an integer number (155719746).

Almost surely, 2^2312243778 is an apocalyptic number.

2312243778 is an abundant number, since it is smaller than the sum of its proper divisors (2670788094).

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

2312243778 is a wasteful number, since it uses less digits than its factorization.

2312243778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16770.

The product of its digits is 112896, while the sum is 39.

The square root of 2312243778 is about 48085.7960108804. The cubic root of 2312243778 is about 1322.3442765557.

The spelling of 2312243778 in words is "two billion, three hundred twelve million, two hundred forty-three thousand, seven hundred seventy-eight".