9312112139 has 16 divisors (see below), whose sum is σ = 10312738560. Its totient is φ = 8337420000.

The previous prime is 9312112133. The next prime is 9312112157.

It is a happy number.

9312112139 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 9312112139 - 2³² = 5017144843 is a prime.

It is a super-2 number, since 2×9312112139² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9312112133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789989 + ... + 801689.

It is an arithmetic number, because the mean of its divisors is an integer number (644546160).

Almost surely, 2^9312112139 is an apocalyptic number.

9312112139 is a deficient number, since it is larger than the sum of its proper divisors (1000626421).

9312112139 is a wasteful number, since it uses less digits than its factorization.

9312112139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12802.

The product of its digits is 2916, while the sum is 32.

The square root of 9312112139 is about 96499.2856916568. The cubic root of 9312112139 is about 2103.8562657374.

The spelling of 9312112139 in words is "nine billion, three hundred twelve million, one hundred twelve thousand, one hundred thirty-nine".