145312243 has 8 divisors (see below), whose sum is σ = 159166080. Its totient is φ = 132048000.

The previous prime is 145312231. The next prime is 145312249. The reversal of 145312243 is 342213541.

145312243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145312243 - 2¹³ = 145304051 is a prime.

It is a super-2 number, since 2×145312243² = 42231295931382098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145312249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146883 + ... + 147868.

It is an arithmetic number, because the mean of its divisors is an integer number (19895760).

Almost surely, 2^145312243 is an apocalyptic number.

145312243 is a deficient number, since it is larger than the sum of its proper divisors (13853837).

145312243 is a wasteful number, since it uses less digits than its factorization.

145312243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294797.

The product of its digits is 2880, while the sum is 25.

The square root of 145312243 is about 12054.5527913731. The cubic root of 145312243 is about 525.7356194259.

Adding to 145312243 its reverse (342213541), we get a palindrome (487525784).

The spelling of 145312243 in words is "one hundred forty-five million, three hundred twelve thousand, two hundred forty-three".