2131011331 has 8 divisors (see below), whose sum is σ = 2200356864. Its totient is φ = 2061703560.

The previous prime is 2131011317. The next prime is 2131011347. The reversal of 2131011331 is 1331101312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131011331 is a prime.

It is a super-3 number, since 3×2131011331³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131011391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146280 + ... + 160186.

It is an arithmetic number, because the mean of its divisors is an integer number (275044608).

Almost surely, 2^2131011331 is an apocalyptic number.

2131011331 is a deficient number, since it is larger than the sum of its proper divisors (69345533).

2131011331 is a wasteful number, since it uses less digits than its factorization.

2131011331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18881.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 2131011331 is about 46162.8782789808. The cubic root of 2131011331 is about 1286.8519539586.

Adding to 2131011331 its reverse (1331101312), we get a palindrome (3462112643).

The spelling of 2131011331 in words is "two billion, one hundred thirty-one million, eleven thousand, three hundred thirty-one".