145344223 has 2 divisors, whose sum is σ = 145344224. Its totient is φ = 145344222.

The previous prime is 145344217. The next prime is 145344253. The reversal of 145344223 is 322443541.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145344223 - 2¹³ = 145336031 is a prime.

It is a super-2 number, since 2×145344223² = 42249886318947458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145344191 and 145344200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145344253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72672111 + 72672112.

It is an arithmetic number, because the mean of its divisors is an integer number (72672112).

Almost surely, 2^145344223 is an apocalyptic number.

145344223 is a deficient number, since it is larger than the sum of its proper divisors (1).

145344223 is an equidigital number, since it uses as much as digits as its factorization.

145344223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 28.

The square root of 145344223 is about 12055.8791881803. The cubic root of 145344223 is about 525.7741841780.

Adding to 145344223 its reverse (322443541), we get a palindrome (467787764).

The spelling of 145344223 in words is "one hundred forty-five million, three hundred forty-four thousand, two hundred twenty-three".