131133222 has 64 divisors (see below), whose sum is σ = 319507200. Its totient is φ = 39536640.

The previous prime is 131133221. The next prime is 131133241. The reversal of 131133222 is 222331131.

131133222 is a `hidden beast` number, since 1 + 311 + 332 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 131133195 and 131133204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131133221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152229 + ... + 153087.

It is an arithmetic number, because the mean of its divisors is an integer number (4992300).

Almost surely, 2^131133222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131133222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159753600).

131133222 is an abundant number, since it is smaller than the sum of its proper divisors (188373978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131133222 is a wasteful number, since it uses less digits than its factorization.

131133222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1132 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 131133222 is about 11451.3414934670. The cubic root of 131133222 is about 508.0474127529.

Adding to 131133222 its reverse (222331131), we get a palindrome (353464353).

The spelling of 131133222 in words is "one hundred thirty-one million, one hundred thirty-three thousand, two hundred twenty-two".