131320222 has 16 divisors (see below), whose sum is σ = 215332992. Its totient is φ = 59567320.

The previous prime is 131320219. The next prime is 131320261. The reversal of 131320222 is 222023131.

It is a super-2 number, since 2×131320222² = 34490001412258568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131320196 and 131320205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5133 + ... + 16999.

It is an arithmetic number, because the mean of its divisors is an integer number (13458312).

Almost surely, 2^131320222 is an apocalyptic number.

131320222 is a deficient number, since it is larger than the sum of its proper divisors (84012770).

131320222 is a wasteful number, since it uses less digits than its factorization.

131320222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12383.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 131320222 is about 11459.5035669090. The cubic root of 131320222 is about 508.2887951184.

Adding to 131320222 its reverse (222023131), we get a palindrome (353343353).

The spelling of 131320222 in words is "one hundred thirty-one million, three hundred twenty thousand, two hundred twenty-two".