3112131091 has 4 divisors (see below), whose sum is σ = 3125152800. Its totient is φ = 3099109384.

The previous prime is 3112131089. The next prime is 3112131097. The reversal of 3112131091 is 1901312113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3112131091 - 2¹ = 3112131089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3112131097) 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 3 ways as a sum of consecutive naturals, for example, 6510496 + ... + 6510973.

It is an arithmetic number, because the mean of its divisors is an integer number (781288200).

Almost surely, 2^3112131091 is an apocalyptic number.

3112131091 is a deficient number, since it is larger than the sum of its proper divisors (13021709).

3112131091 is a wasteful number, since it uses less digits than its factorization.

3112131091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13021708.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 3112131091 is about 55786.4776715648. The cubic root of 3112131091 is about 1459.9992323446. Note that the first 3 decimals are identical.

The spelling of 3112131091 in words is "three billion, one hundred twelve million, one hundred thirty-one thousand, ninety-one".