3112071381 has 16 divisors (see below), whose sum is σ = 4611672000. Its totient is φ = 2074176144.

The previous prime is 3112071377. The next prime is 3112071383. The reversal of 3112071381 is 1831702113.

It is a happy number.

It is not a de Polignac number, because 3112071381 - 2² = 3112071377 is a prime.

It is a super-2 number, since 2×3112071381² = 19369976560878494322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112071383) 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 15 ways as a sum of consecutive naturals, for example, 110095 + ... + 135443.

It is an arithmetic number, because the mean of its divisors is an integer number (288229500).

Almost surely, 2^3112071381 is an apocalyptic number.

It is an amenable number.

3112071381 is a deficient number, since it is larger than the sum of its proper divisors (1499600619).

3112071381 is a wasteful number, since it uses less digits than its factorization.

3112071381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29905 (or 29899 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 3112071381 is about 55785.9425034659. The cubic root of 3112071381 is about 1459.9898950011.

Adding to 3112071381 its reverse (1831702113), we get a palindrome (4943773494).

The spelling of 3112071381 in words is "three billion, one hundred twelve million, seventy-one thousand, three hundred eighty-one".