145012231 has 8 divisors (see below), whose sum is σ = 178476704. Its totient is φ = 114734880.

The previous prime is 145012207. The next prime is 145012243. The reversal of 145012231 is 132210541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145012231 - 2¹⁹ = 144487943 is a prime.

It is a super-2 number, since 2×145012231² = 42057094279194722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145012199 and 145012208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145012201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796680 + ... + 796861.

It is an arithmetic number, because the mean of its divisors is an integer number (22309588).

Almost surely, 2^145012231 is an apocalyptic number.

145012231 is a deficient number, since it is larger than the sum of its proper divisors (33464473).

145012231 is a wasteful number, since it uses less digits than its factorization.

145012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593561.

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

The square root of 145012231 is about 12042.1024327150. The cubic root of 145012231 is about 525.3735584738.

Adding to 145012231 its reverse (132210541), we get a palindrome (277222772).

The spelling of 145012231 in words is "one hundred forty-five million, twelve thousand, two hundred thirty-one".