131122443 has 4 divisors (see below), whose sum is σ = 174829928. Its totient is φ = 87414960.

The previous prime is 131122429. The next prime is 131122457. The reversal of 131122443 is 344221131.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (131122429) and next prime (131122457).

It is not a de Polignac number, because 131122443 - 2¹² = 131118347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131122483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21853738 + ... + 21853743.

It is an arithmetic number, because the mean of its divisors is an integer number (43707482).

Almost surely, 2^131122443 is an apocalyptic number.

131122443 is a deficient number, since it is larger than the sum of its proper divisors (43707485).

131122443 is an equidigital number, since it uses as much as digits as its factorization.

131122443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43707484.

The product of its digits is 576, while the sum is 21.

The square root of 131122443 is about 11450.8708402462. The cubic root of 131122443 is about 508.0334920672.

Adding to 131122443 its reverse (344221131), we get a palindrome (475343574).

The spelling of 131122443 in words is "one hundred thirty-one million, one hundred twenty-two thousand, four hundred forty-three".