145193303 has 4 divisors (see below), whose sum is σ = 145275288. Its totient is φ = 145111320.

The previous prime is 145193299. The next prime is 145193317. The reversal of 145193303 is 303391541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145193303 - 2² = 145193299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145193353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38276 + ... + 41897.

It is an arithmetic number, because the mean of its divisors is an integer number (36318822).

Almost surely, 2^145193303 is an apocalyptic number.

145193303 is a deficient number, since it is larger than the sum of its proper divisors (81985).

145193303 is an equidigital number, since it uses as much as digits as its factorization.

145193303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81984.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 145193303 is about 12049.6183756997. The cubic root of 145193303 is about 525.5921397442.

The spelling of 145193303 in words is "one hundred forty-five million, one hundred ninety-three thousand, three hundred three".