145383313 has 4 divisors (see below), whose sum is σ = 147766708. Its totient is φ = 142999920.

The previous prime is 145383311. The next prime is 145383317. The reversal of 145383313 is 313383541.

145383313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 22771984 + 122611329 = 4772^2 + 11073^2 .

It is a cyclic number.

It is not a de Polignac number, because 145383313 - 2¹ = 145383311 is a prime.

It is a super-2 number, since 2×145383313² = 42272615397711938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145383311) 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, 1191606 + ... + 1191727.

It is an arithmetic number, because the mean of its divisors is an integer number (36941677).

Almost surely, 2^145383313 is an apocalyptic number.

It is an amenable number.

145383313 is a deficient number, since it is larger than the sum of its proper divisors (2383395).

145383313 is an equidigital number, since it uses as much as digits as its factorization.

145383313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383394.

The product of its digits is 12960, while the sum is 31.

The square root of 145383313 is about 12057.5002799088. The cubic root of 145383313 is about 525.8213152122.

The spelling of 145383313 in words is "one hundred forty-five million, three hundred eighty-three thousand, three hundred thirteen".