131436443 has 2 divisors, whose sum is σ = 131436444. Its totient is φ = 131436442.

The previous prime is 131436419. The next prime is 131436457. The reversal of 131436443 is 344634131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131436443 - 2¹⁶ = 131370907 is a prime.

It is not a weakly prime, because it can be changed into another prime (131436463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65718221 + 65718222.

It is an arithmetic number, because the mean of its divisors is an integer number (65718222).

Almost surely, 2^131436443 is an apocalyptic number.

131436443 is a deficient number, since it is larger than the sum of its proper divisors (1).

131436443 is an equidigital number, since it uses as much as digits as its factorization.

131436443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

The square root of 131436443 is about 11464.5733893591. The cubic root of 131436443 is about 508.4386994580.

The spelling of 131436443 in words is "one hundred thirty-one million, four hundred thirty-six thousand, four hundred forty-three".