131222011231 has 8 divisors (see below), whose sum is σ = 135819208800. Its totient is φ = 126629633760.

The previous prime is 131222011223. The next prime is 131222011237. The reversal of 131222011231 is 132110222131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131222011231 - 2³ = 131222011223 is a prime.

It is a super-2 number, since 2×131222011231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131222011199 and 131222011208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222011237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1149580 + ... + 1258561.

It is an arithmetic number, because the mean of its divisors is an integer number (16977401100).

Almost surely, 2^131222011231 is an apocalyptic number.

131222011231 is a deficient number, since it is larger than the sum of its proper divisors (4597197569).

131222011231 is a wasteful number, since it uses less digits than its factorization.

131222011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410049.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 131222011231 its reverse (132110222131), we get a palindrome (263332233362).

The spelling of 131222011231 in words is "one hundred thirty-one billion, two hundred twenty-two million, eleven thousand, two hundred thirty-one".