211312313331 has 32 divisors (see below), whose sum is σ = 325388648448. Its totient is φ = 119481682080.

The previous prime is 211312313299. The next prime is 211312313417. The reversal of 211312313331 is 133313213112.

It is not a de Polignac number, because 211312313331 - 2⁵ = 211312313299 is a prime.

It is a super-2 number, since 2×211312313331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211312313731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1884676 + ... + 1993646.

It is an arithmetic number, because the mean of its divisors is an integer number (10168395264).

Almost surely, 2^211312313331 is an apocalyptic number.

211312313331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211312313331 is a deficient number, since it is larger than the sum of its proper divisors (114076335117).

211312313331 is a wasteful number, since it uses less digits than its factorization.

211312313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109951.

The product of its digits is 972, while the sum is 24.

Adding to 211312313331 its reverse (133313213112), we get a palindrome (344625526443).

The spelling of 211312313331 in words is "two hundred eleven billion, three hundred twelve million, three hundred thirteen thousand, three hundred thirty-one".