145311203 has 2 divisors, whose sum is σ = 145311204. Its totient is φ = 145311202.

The previous prime is 145311197. The next prime is 145311281. The reversal of 145311203 is 302113541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145311203 - 2²⁰ = 144262627 is a prime.

It is a super-2 number, since 2×145311203² = 42230691434614418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145311293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72655601 + 72655602.

It is an arithmetic number, because the mean of its divisors is an integer number (72655602).

Almost surely, 2^145311203 is an apocalyptic number.

145311203 is a deficient number, since it is larger than the sum of its proper divisors (1).

145311203 is an equidigital number, since it uses as much as digits as its factorization.

145311203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 145311203 is about 12054.5096540672. The cubic root of 145311203 is about 525.7343651927.

Adding to 145311203 its reverse (302113541), we get a palindrome (447424744).

The spelling of 145311203 in words is "one hundred forty-five million, three hundred eleven thousand, two hundred three".