145131443 has 4 divisors (see below), whose sum is σ = 152769960. Its totient is φ = 137492928.

The previous prime is 145131433. The next prime is 145131461. The reversal of 145131443 is 344131541.

It is a happy number.

145131443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344131541 = 13 ⋅26471657.

It is a cyclic number.

It is not a de Polignac number, because 145131443 - 2⁶ = 145131379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145131433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3819230 + ... + 3819267.

It is an arithmetic number, because the mean of its divisors is an integer number (38192490).

Almost surely, 2^145131443 is an apocalyptic number.

145131443 is a deficient number, since it is larger than the sum of its proper divisors (7638517).

145131443 is an equidigital number, since it uses as much as digits as its factorization.

145131443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638516.

The product of its digits is 2880, while the sum is 26.

The square root of 145131443 is about 12047.0512159615. The cubic root of 145131443 is about 525.5174858228.

Adding to 145131443 its reverse (344131541), we get a palindrome (489262984).

The spelling of 145131443 in words is "one hundred forty-five million, one hundred thirty-one thousand, four hundred forty-three".