131432222 has 4 divisors (see below), whose sum is σ = 197148336. Its totient is φ = 65716110.

The previous prime is 131432201. The next prime is 131432233. The reversal of 131432222 is 222234131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222234131 = 7 ⋅31747733.

It is a junction number, because it is equal to n+sod(n) for n = 131432194 and 131432203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32858054 + ... + 32858057.

It is an arithmetic number, because the mean of its divisors is an integer number (49287084).

Almost surely, 2^131432222 is an apocalyptic number.

131432222 is a deficient number, since it is larger than the sum of its proper divisors (65716114).

131432222 is an equidigital number, since it uses as much as digits as its factorization.

131432222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65716113.

The product of its digits is 576, while the sum is 20.

The square root of 131432222 is about 11464.3892990425. The cubic root of 131432222 is about 508.4332566684.

Adding to 131432222 its reverse (222234131), we get a palindrome (353666353).

The spelling of 131432222 in words is "one hundred thirty-one million, four hundred thirty-two thousand, two hundred twenty-two".