3112781316 has 12 divisors (see below), whose sum is σ = 7263156432. Its totient is φ = 1037593768.

The previous prime is 3112781299. The next prime is 3112781333. The reversal of 3112781316 is 6131872113.

It is an interprime number because it is at equal distance from previous prime (3112781299) and next prime (3112781333).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129699210 + ... + 129699233.

It is an arithmetic number, because the mean of its divisors is an integer number (605263036).

Almost surely, 2^3112781316 is an apocalyptic number.

It is an amenable number.

3112781316 is an abundant number, since it is smaller than the sum of its proper divisors (4150375116).

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

3112781316 is a wasteful number, since it uses less digits than its factorization.

3112781316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259398450 (or 259398448 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 3112781316 is about 55792.3051683653. The cubic root of 3112781316 is about 1460.1009056424.

The spelling of 3112781316 in words is "three billion, one hundred twelve million, seven hundred eighty-one thousand, three hundred sixteen".