1213131030111 has 256 divisors, whose sum is σ = 2479428403200. Its totient is φ = 569243376000.

The previous prime is 1213131030079. The next prime is 1213131030113. The reversal of 1213131030111 is 1110301313121.

1213131030111 is a `hidden beast` number, since 1 + 21 + 31 + 310 + 301 + 1 + 1 = 666.

It is not a de Polignac number, because 1213131030111 - 2⁵ = 1213131030079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213131030113) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 214672636 + ... + 214678286.

It is an arithmetic number, because the mean of its divisors is an integer number (9685267200).

Almost surely, 2^{1213131030111} is an apocalyptic number.

1213131030111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213131030111 is an abundant number, since it is smaller than the sum of its proper divisors (1266297373089).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213131030111 is a wasteful number, since it uses less digits than its factorization.

1213131030111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764 (or 5732 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1213131030111 its reverse (1110301313121), we get a palindrome (2323432343232).

The spelling of 1213131030111 in words is "one trillion, two hundred thirteen billion, one hundred thirty-one million, thirty thousand, one hundred eleven".