2131311133 has 4 divisors (see below), whose sum is σ = 2435784160. Its totient is φ = 1826838108.

The previous prime is 2131311109. The next prime is 2131311151. The reversal of 2131311133 is 3311131312.

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-2131311133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131311133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131311173) 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, 152236503 + ... + 152236516.

It is an arithmetic number, because the mean of its divisors is an integer number (608946040).

Almost surely, 2^2131311133 is an apocalyptic number.

It is an amenable number.

2131311133 is a deficient number, since it is larger than the sum of its proper divisors (304473027).

2131311133 is an equidigital number, since it uses as much as digits as its factorization.

2131311133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304473026.

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

The square root of 2131311133 is about 46166.1253843118. The cubic root of 2131311133 is about 1286.9122981862.

Adding to 2131311133 its reverse (3311131312), we get a palindrome (5442442445).

The spelling of 2131311133 in words is "two billion, one hundred thirty-one million, three hundred eleven thousand, one hundred thirty-three".