145331369 has 2 divisors, whose sum is σ = 145331370. Its totient is φ = 145331368.

The previous prime is 145331321. The next prime is 145331401. The reversal of 145331369 is 963133541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100240144 + 45091225 = 10012^2 + 6715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145331369 is a prime.

It is a super-2 number, since 2×145331369² = 42242413630828322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145331569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72665684 + 72665685.

It is an arithmetic number, because the mean of its divisors is an integer number (72665685).

Almost surely, 2^145331369 is an apocalyptic number.

It is an amenable number.

145331369 is a deficient number, since it is larger than the sum of its proper divisors (1).

145331369 is an equidigital number, since it uses as much as digits as its factorization.

145331369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 35.

The square root of 145331369 is about 12055.3460754970. The cubic root of 145331369 is about 525.7586841912.

The spelling of 145331369 in words is "one hundred forty-five million, three hundred thirty-one thousand, three hundred sixty-nine".