2111131312 has 10 divisors (see below), whose sum is σ = 4090316948. Its totient is φ = 1055565648.

The previous prime is 2111131301. The next prime is 2111131313. The reversal of 2111131312 is 2131311112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 131945707 = 2111131312 / (2 + 1 + 1 + 1 + 1 + 3 + 1 + 3 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (2111131313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65972838 + ... + 65972869.

Almost surely, 2^2111131312 is an apocalyptic number.

It is an amenable number.

2111131312 is a deficient number, since it is larger than the sum of its proper divisors (1979185636).

2111131312 is a wasteful number, since it uses less digits than its factorization.

2111131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131945715 (or 131945709 counting only the distinct ones).

The product of its digits is 36, while the sum is 16.

The square root of 2111131312 is about 45947.0490020850. The cubic root of 2111131312 is about 1282.8378021570.

Adding to 2111131312 its reverse (2131311112), we get a palindrome (4242442424).

The spelling of 2111131312 in words is "two billion, one hundred eleven million, one hundred thirty-one thousand, three hundred twelve".