131103443 has 2 divisors, whose sum is σ = 131103444. Its totient is φ = 131103442.

The previous prime is 131103377. The next prime is 131103451. The reversal of 131103443 is 344301131.

It is a strong prime.

It is an emirp because it is prime and its reverse (344301131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131103443 - 2¹² = 131099347 is a prime.

It is a super-2 number, since 2×131103443² = 34376225532908498, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (131153443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65551721 + 65551722.

It is an arithmetic number, because the mean of its divisors is an integer number (65551722).

Almost surely, 2^131103443 is an apocalyptic number.

131103443 is a deficient number, since it is larger than the sum of its proper divisors (1).

131103443 is an equidigital number, since it uses as much as digits as its factorization.

131103443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 131103443 is about 11450.0411789653. The cubic root of 131103443 is about 508.0089524018.

Adding to 131103443 its reverse (344301131), we get a palindrome (475404574).

The spelling of 131103443 in words is "one hundred thirty-one million, one hundred three thousand, four hundred forty-three".