211031233332131 has 4 divisors (see below), whose sum is σ = 211035308368632. Its totient is φ = 211027158295632.

The previous prime is 211031233332047. The next prime is 211031233332133. The reversal of 211031233332131 is 131233332130112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211031233332131 is a prime.

It is a super-2 number, since 2×211031233332131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211031233332094 and 211031233332103.

It is not an unprimeable number, because it can be changed into a prime (211031233332133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037440570 + ... + 2037544143.

It is an arithmetic number, because the mean of its divisors is an integer number (52758827092158).

Almost surely, 2^{211031233332131} is an apocalyptic number.

211031233332131 is a deficient number, since it is larger than the sum of its proper divisors (4075036501).

211031233332131 is an equidigital number, since it uses as much as digits as its factorization.

211031233332131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075036500.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 211031233332131 its reverse (131233332130112), we get a palindrome (342264565462243).

The spelling of 211031233332131 in words is "two hundred eleven trillion, thirty-one billion, two hundred thirty-three million, three hundred thirty-two thousand, one hundred thirty-one".