2131113329 has 4 divisors (see below), whose sum is σ = 2151030384. Its totient is φ = 2111196276.

The previous prime is 2131113317. The next prime is 2131113331. The reversal of 2131113329 is 9233111312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131113329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2131113298 and 2131113307.

It is not an unprimeable number, because it can be changed into a prime (2131113349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9958367 + ... + 9958580.

It is an arithmetic number, because the mean of its divisors is an integer number (537757596).

Almost surely, 2^2131113329 is an apocalyptic number.

It is an amenable number.

2131113329 is a deficient number, since it is larger than the sum of its proper divisors (19917055).

2131113329 is a wasteful number, since it uses less digits than its factorization.

2131113329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19917054.

The product of its digits is 972, while the sum is 26.

The square root of 2131113329 is about 46163.9830278974. The cubic root of 2131113329 is about 1286.8724847788.

The spelling of 2131113329 in words is "two billion, one hundred thirty-one million, one hundred thirteen thousand, three hundred twenty-nine".