2131211231331 has 32 divisors (see below), whose sum is σ = 3497768225280. Its totient is φ = 1124028105984.

The previous prime is 2131211231321. The next prime is 2131211231339. The reversal of 2131211231331 is 1331321121312.

It is not a de Polignac number, because 2131211231331 - 2⁶ = 2131211231267 is a prime.

It is a super-2 number, since 2×2131211231331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2131211231339) 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, 1998535 + ... + 2873423.

It is an arithmetic number, because the mean of its divisors is an integer number (109305257040).

Almost surely, 2^{2131211231331} is an apocalyptic number.

2131211231331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2131211231331 is a deficient number, since it is larger than the sum of its proper divisors (1366556993949).

2131211231331 is a wasteful number, since it uses less digits than its factorization.

2131211231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883835.

The product of its digits is 648, while the sum is 24.

Adding to 2131211231331 its reverse (1331321121312), we get a palindrome (3462532352643).

The spelling of 2131211231331 in words is "two trillion, one hundred thirty-one billion, two hundred eleven million, two hundred thirty-one thousand, three hundred thirty-one".