2131113331 has 2 divisors, whose sum is σ = 2131113332. Its totient is φ = 2131113330.

The previous prime is 2131113317. The next prime is 2131113349. The reversal of 2131113331 is 1333111312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131113331 - 2¹³ = 2131105139 is a prime.

It is a super-2 number, since 2×2131113331² = 9083288059131831122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2131113299 and 2131113308.

It is not a weakly prime, because it can be changed into another prime (2131113301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065556665 + 1065556666.

It is an arithmetic number, because the mean of its divisors is an integer number (1065556666).

Almost surely, 2^2131113331 is an apocalyptic number.

2131113331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131113331 is an equidigital number, since it uses as much as digits as its factorization.

2131113331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 19.

The square root of 2131113331 is about 46163.9830495593. The cubic root of 2131113331 is about 1286.8724851814.

Adding to 2131113331 its reverse (1333111312), we get a palindrome (3464224643).

The spelling of 2131113331 in words is "two billion, one hundred thirty-one million, one hundred thirteen thousand, three hundred thirty-one".