145340023 has 2 divisors, whose sum is σ = 145340024. Its totient is φ = 145340022.

The previous prime is 145340017. The next prime is 145340051. The reversal of 145340023 is 320043541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145340023 - 2⁵ = 145339991 is a prime.

It is a super-2 number, since 2×145340023² = 42247444571281058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145339976 and 145340003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145340093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72670011 + 72670012.

It is an arithmetic number, because the mean of its divisors is an integer number (72670012).

Almost surely, 2^145340023 is an apocalyptic number.

145340023 is a deficient number, since it is larger than the sum of its proper divisors (1).

145340023 is an equidigital number, since it uses as much as digits as its factorization.

145340023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 145340023 is about 12055.7049980497. The cubic root of 145340023 is about 525.7691197115.

Adding to 145340023 its reverse (320043541), we get a palindrome (465383564).

The spelling of 145340023 in words is "one hundred forty-five million, three hundred forty thousand, twenty-three".