131136222 has 32 divisors (see below), whose sum is σ = 300079872. Its totient is φ = 37425024.

The previous prime is 131136211. The next prime is 131136259. The reversal of 131136222 is 222631131.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69078 + ... + 70950.

It is an arithmetic number, because the mean of its divisors is an integer number (9377496).

Almost surely, 2^131136222 is an apocalyptic number.

131136222 is an abundant number, since it is smaller than the sum of its proper divisors (168943650).

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

131136222 is a wasteful number, since it uses less digits than its factorization.

131136222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552.

The product of its digits is 432, while the sum is 21.

The square root of 131136222 is about 11451.4724817379. The cubic root of 131136222 is about 508.0512870079.

Adding to 131136222 its reverse (222631131), we get a palindrome (353767353).

The spelling of 131136222 in words is "one hundred thirty-one million, one hundred thirty-six thousand, two hundred twenty-two".