144331403 has 2 divisors, whose sum is σ = 144331404. Its totient is φ = 144331402.

The previous prime is 144331399. The next prime is 144331409. The reversal of 144331403 is 304133441.

It is a weak prime.

It is an emirp because it is prime and its reverse (304133441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144331403 - 2² = 144331399 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (144331409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72165701 + 72165702.

It is an arithmetic number, because the mean of its divisors is an integer number (72165702).

Almost surely, 2^144331403 is an apocalyptic number.

144331403 is a deficient number, since it is larger than the sum of its proper divisors (1).

144331403 is an equidigital number, since it uses as much as digits as its factorization.

144331403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 144331403 is about 12013.8005227322. The cubic root of 144331403 is about 524.5500640900.

Adding to 144331403 its reverse (304133441), we get a palindrome (448464844).

The spelling of 144331403 in words is "one hundred forty-four million, three hundred thirty-one thousand, four hundred three".