2331781316 has 12 divisors (see below), whose sum is σ = 4090796220. Its totient is φ = 1162982400.

The previous prime is 2331781313. The next prime is 2331781321. The reversal of 2331781316 is 6131871332.

It can be written as a sum of positive squares in 2 ways, for example, as 1327144900 + 1004636416 = 36430^2 + 31696^2 .

It is not an unprimeable number, because it can be changed into a prime (2331781313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725261 + ... + 728468.

It is an arithmetic number, because the mean of its divisors is an integer number (340899685).

Almost surely, 2^2331781316 is an apocalyptic number.

It is an amenable number.

2331781316 is a deficient number, since it is larger than the sum of its proper divisors (1759014904).

2331781316 is a wasteful number, since it uses less digits than its factorization.

2331781316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454134 (or 1454132 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 2331781316 is about 48288.5215760433. The cubic root of 2331781316 is about 1326.0582628469.

The spelling of 2331781316 in words is "two billion, three hundred thirty-one million, seven hundred eighty-one thousand, three hundred sixteen".