143630441 has 2 divisors, whose sum is σ = 143630442. Its totient is φ = 143630440.

The previous prime is 143630437. The next prime is 143630447. The reversal of 143630441 is 144036341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130051216 + 13579225 = 11404^2 + 3685^2 .

It is a cyclic number.

It is not a de Polignac number, because 143630441 - 2² = 143630437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143630441.

It is not a weakly prime, because it can be changed into another prime (143630447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71815220 + 71815221.

It is an arithmetic number, because the mean of its divisors is an integer number (71815221).

Almost surely, 2^143630441 is an apocalyptic number.

It is an amenable number.

143630441 is a deficient number, since it is larger than the sum of its proper divisors (1).

143630441 is an equidigital number, since it uses as much as digits as its factorization.

143630441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 143630441 is about 11984.5918161613. The cubic root of 143630441 is about 523.6995064891.

Adding to 143630441 its reverse (144036341), we get a palindrome (287666782).

The spelling of 143630441 in words is "one hundred forty-three million, six hundred thirty thousand, four hundred forty-one".