131443322 has 4 divisors (see below), whose sum is σ = 197164986. Its totient is φ = 65721660.

The previous prime is 131443307. The next prime is 131443373. The reversal of 131443322 is 223344131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223344131 = 191 ⋅1169341.

It can be written as a sum of positive squares in only one way, i.e., 86136961 + 45306361 = 9281^2 + 6731^2 .

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 as a sum of consecutive naturals, namely, 32860829 + ... + 32860832.

Almost surely, 2^131443322 is an apocalyptic number.

131443322 is a deficient number, since it is larger than the sum of its proper divisors (65721664).

131443322 is an equidigital number, since it uses as much as digits as its factorization.

131443322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65721663.

The product of its digits is 1728, while the sum is 23.

The square root of 131443322 is about 11464.8733965971. The cubic root of 131443322 is about 508.4475693693.

Adding to 131443322 its reverse (223344131), we get a palindrome (354787453).

The spelling of 131443322 in words is "one hundred thirty-one million, four hundred forty-three thousand, three hundred twenty-two".