211321130331 has 4 divisors (see below), whose sum is σ = 281761507112. Its totient is φ = 140880753552.

The previous prime is 211321130323. The next prime is 211321130357. The reversal of 211321130331 is 133031123112.

It is a happy number.

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

It is not a de Polignac number, because 211321130331 - 2³ = 211321130323 is a prime.

It is a super-2 number, since 2×211321130331² (a number of 23 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 = 211321130298 and 211321130307.

It is not an unprimeable number, because it can be changed into a prime (211321130381) 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, 35220188386 + ... + 35220188391.

It is an arithmetic number, because the mean of its divisors is an integer number (70440376778).

Almost surely, 2^211321130331 is an apocalyptic number.

211321130331 is a deficient number, since it is larger than the sum of its proper divisors (70440376781).

211321130331 is an equidigital number, since it uses as much as digits as its factorization.

211321130331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70440376780.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 211321130331 its reverse (133031123112), we get a palindrome (344352253443).

The spelling of 211321130331 in words is "two hundred eleven billion, three hundred twenty-one million, one hundred thirty thousand, three hundred thirty-one".