131123311011 has 36 divisors (see below), whose sum is σ = 240352200504. Its totient is φ = 68116003200.

The previous prime is 131123311003. The next prime is 131123311049. The reversal of 131123311011 is 110113321131.

131123311011 is a `hidden beast` number, since 1 + 311 + 2 + 331 + 10 + 11 = 666.

It is not a de Polignac number, because 131123311011 - 2³ = 131123311003 is a prime.

It is a super-3 number, since 3×131123311011³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131123311091) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13510230 + ... + 13519931.

It is an arithmetic number, because the mean of its divisors is an integer number (6676450014).

Almost surely, 2^131123311011 is an apocalyptic number.

131123311011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131123311011 is a deficient number, since it is larger than the sum of its proper divisors (109228889493).

131123311011 is a wasteful number, since it uses less digits than its factorization.

131123311011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27030192 (or 27030182 counting only the distinct ones).

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

Adding to 131123311011 its reverse (110113321131), we get a palindrome (241236632142).

The spelling of 131123311011 in words is "one hundred thirty-one billion, one hundred twenty-three million, three hundred eleven thousand, eleven".