131011222202331 has 4 divisors (see below), whose sum is σ = 174681629603112. Its totient is φ = 87340814801552.

The previous prime is 131011222202323. The next prime is 131011222202353. The reversal of 131011222202331 is 133202222110131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131011222202331 - 2³ = 131011222202323 is a prime.

It is a super-2 number, since 2×131011222202331² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131011222202321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21835203700386 + ... + 21835203700391.

It is an arithmetic number, because the mean of its divisors is an integer number (43670407400778).

Almost surely, 2^{131011222202331} is an apocalyptic number.

131011222202331 is a deficient number, since it is larger than the sum of its proper divisors (43670407400781).

131011222202331 is an equidigital number, since it uses as much as digits as its factorization.

131011222202331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43670407400780.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 131011222202331 its reverse (133202222110131), we get a palindrome (264213444312462).

The spelling of 131011222202331 in words is "one hundred thirty-one trillion, eleven billion, two hundred twenty-two million, two hundred two thousand, three hundred thirty-one".