211210323131 has 2 divisors, whose sum is σ = 211210323132. Its totient is φ = 211210323130.

The previous prime is 211210323089. The next prime is 211210323157. The reversal of 211210323131 is 131323012112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211210323131 is a prime.

It is a super-2 number, since 2×211210323131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211210323931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605161565 + 105605161566.

It is an arithmetic number, because the mean of its divisors is an integer number (105605161566).

Almost surely, 2^211210323131 is an apocalyptic number.

211210323131 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210323131 is an equidigital number, since it uses as much as digits as its factorization.

211210323131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211210323131 its reverse (131323012112), we get a palindrome (342533335243).

The spelling of 211210323131 in words is "two hundred eleven billion, two hundred ten million, three hundred twenty-three thousand, one hundred thirty-one".