145820303 has 2 divisors, whose sum is σ = 145820304. Its totient is φ = 145820302.

The previous prime is 145820291. The next prime is 145820351. The reversal of 145820303 is 303028541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145820303 - 2⁶ = 145820239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145820393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72910151 + 72910152.

It is an arithmetic number, because the mean of its divisors is an integer number (72910152).

Almost surely, 2^145820303 is an apocalyptic number.

145820303 is a deficient number, since it is larger than the sum of its proper divisors (1).

145820303 is an equidigital number, since it uses as much as digits as its factorization.

145820303 is an evil number, because the sum of its binary digits is even.

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

The square root of 145820303 is about 12075.6077693837. The cubic root of 145820303 is about 526.3476223338.

Adding to 145820303 its reverse (303028541), we get a palindrome (448848844).

The spelling of 145820303 in words is "one hundred forty-five million, eight hundred twenty thousand, three hundred three".