145390313 has 2 divisors, whose sum is σ = 145390314. Its totient is φ = 145390312.

The previous prime is 145390237. The next prime is 145390319. The reversal of 145390313 is 313093541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75550864 + 69839449 = 8692^2 + 8357^2 .

It is a cyclic number.

It is not a de Polignac number, because 145390313 - 2¹⁰ = 145389289 is a prime.

It is a super-2 number, since 2×145390313² = 42276686228475938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145390319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72695156 + 72695157.

It is an arithmetic number, because the mean of its divisors is an integer number (72695157).

Almost surely, 2^145390313 is an apocalyptic number.

It is an amenable number.

145390313 is a deficient number, since it is larger than the sum of its proper divisors (1).

145390313 is an equidigital number, since it uses as much as digits as its factorization.

145390313 is an odious number, because the sum of its binary digits is odd.

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

The square root of 145390313 is about 12057.7905521700. The cubic root of 145390313 is about 525.8297542598.

The spelling of 145390313 in words is "one hundred forty-five million, three hundred ninety thousand, three hundred thirteen".