2011231223131 has 16 divisors (see below), whose sum is σ = 2212631134560. Its totient is φ = 1816686144000.

The previous prime is 2011231223129. The next prime is 2011231223137. The reversal of 2011231223131 is 1313221321102.

It is not a de Polignac number, because 2011231223131 - 2¹ = 2011231223129 is a prime.

It is a super-2 number, since 2×2011231223131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011231223137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3589870 + ... + 4112131.

It is an arithmetic number, because the mean of its divisors is an integer number (138289445910).

Almost surely, 2^{2011231223131} is an apocalyptic number.

2011231223131 is a deficient number, since it is larger than the sum of its proper divisors (201399911429).

2011231223131 is a wasteful number, since it uses less digits than its factorization.

2011231223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7702446.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2011231223131 its reverse (1313221321102), we get a palindrome (3324452544233).

The spelling of 2011231223131 in words is "two trillion, eleven billion, two hundred thirty-one million, two hundred twenty-three thousand, one hundred thirty-one".