145031441 has 2 divisors, whose sum is σ = 145031442. Its totient is φ = 145031440.

The previous prime is 145031431. The next prime is 145031443. The reversal of 145031441 is 144130541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73273600 + 71757841 = 8560^2 + 8471^2 .

It is an emirp because it is prime and its reverse (144130541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145031441 - 2⁶ = 145031377 is a prime.

Together with 145031443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145031443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72515720 + 72515721.

It is an arithmetic number, because the mean of its divisors is an integer number (72515721).

Almost surely, 2^145031441 is an apocalyptic number.

It is an amenable number.

145031441 is a deficient number, since it is larger than the sum of its proper divisors (1).

145031441 is an equidigital number, since it uses as much as digits as its factorization.

145031441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 145031441 is about 12042.9000244958. The cubic root of 145031441 is about 525.3967564720.

Adding to 145031441 its reverse (144130541), we get a palindrome (289161982).

The spelling of 145031441 in words is "one hundred forty-five million, thirty-one thousand, four hundred forty-one".