145323197 has 2 divisors, whose sum is σ = 145323198. Its totient is φ = 145323196.

The previous prime is 145323181. The next prime is 145323203. The reversal of 145323197 is 791323541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142587481 + 2735716 = 11941^2 + 1654^2 .

It is a cyclic number.

It is not a de Polignac number, because 145323197 - 2⁴ = 145323181 is a prime.

It is a super-2 number, since 2×145323197² = 42237663172601618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145523197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72661598 + 72661599.

It is an arithmetic number, because the mean of its divisors is an integer number (72661599).

Almost surely, 2^145323197 is an apocalyptic number.

It is an amenable number.

145323197 is a deficient number, since it is larger than the sum of its proper divisors (1).

145323197 is an equidigital number, since it uses as much as digits as its factorization.

145323197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 145323197 is about 12055.0071339672. The cubic root of 145323197 is about 525.7488295156.

The spelling of 145323197 in words is "one hundred forty-five million, three hundred twenty-three thousand, one hundred ninety-seven".