145023211 has 16 divisors (see below), whose sum is σ = 155105280. Its totient is φ = 135289440.

The previous prime is 145023167. The next prime is 145023227. The reversal of 145023211 is 112320541.

It is a cyclic number.

It is not a de Polignac number, because 145023211 - 2¹³ = 145015019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145023511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330130 + ... + 330568.

It is an arithmetic number, because the mean of its divisors is an integer number (9694080).

Almost surely, 2^145023211 is an apocalyptic number.

145023211 is a deficient number, since it is larger than the sum of its proper divisors (10082069).

145023211 is a wasteful number, since it uses less digits than its factorization.

145023211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 145023211 is about 12042.5583245422. The cubic root of 145023211 is about 525.3868181739.

Adding to 145023211 its reverse (112320541), we get a palindrome (257343752).

The spelling of 145023211 in words is "one hundred forty-five million, twenty-three thousand, two hundred eleven".