131222011311 has 28 divisors (see below), whose sum is σ = 196785145272. Its totient is φ = 87462608976.

The previous prime is 131222011307. The next prime is 131222011321. The reversal of 131222011311 is 113110222131.

131222011311 is a `hidden beast` number, since 1 + 312 + 220 + 1 + 131 + 1 = 666.

It is not a de Polignac number, because 131222011311 - 2² = 131222011307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222011321) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3947020 + ... + 3980126.

Almost surely, 2^131222011311 is an apocalyptic number.

131222011311 is a deficient number, since it is larger than the sum of its proper divisors (65563133961).

131222011311 is an frugal number, since it uses more digits than its factorization.

131222011311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38562 (or 38547 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 131222011311 its reverse (113110222131), we get a palindrome (244332233442).

The spelling of 131222011311 in words is "one hundred thirty-one billion, two hundred twenty-two million, eleven thousand, three hundred eleven".