145318133 has 4 divisors (see below), whose sum is σ = 145952940. Its totient is φ = 144683328.

The previous prime is 145318123. The next prime is 145318153. The reversal of 145318133 is 331813541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 141086884 + 4231249 = 11878^2 + 2057^2 .

It is a cyclic number.

It is not a de Polignac number, because 145318133 - 2²⁰ = 144269557 is a prime.

It is a super-2 number, since 2×145318133² = 42234719557211378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145318096 and 145318105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145318123) 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 in 3 ways as a sum of consecutive naturals, for example, 317060 + ... + 317517.

It is an arithmetic number, because the mean of its divisors is an integer number (36488235).

Almost surely, 2^145318133 is an apocalyptic number.

It is an amenable number.

145318133 is a deficient number, since it is larger than the sum of its proper divisors (634807).

145318133 is an equidigital number, since it uses as much as digits as its factorization.

145318133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634806.

The product of its digits is 4320, while the sum is 29.

The square root of 145318133 is about 12054.7970949328. The cubic root of 145318133 is about 525.7427226149.

The spelling of 145318133 in words is "one hundred forty-five million, three hundred eighteen thousand, one hundred thirty-three".