145341231 has 16 divisors (see below), whose sum is σ = 222528768. Its totient is φ = 82656000.

The previous prime is 145341227. The next prime is 145341239. The reversal of 145341231 is 132143541.

It is a happy number.

It is not a de Polignac number, because 145341231 - 2² = 145341227 is a prime.

It is a super-2 number, since 2×145341231² = 42248146857190722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145341239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11970 + ... + 20831.

It is an arithmetic number, because the mean of its divisors is an integer number (13908048).

Almost surely, 2^145341231 is an apocalyptic number.

145341231 is a deficient number, since it is larger than the sum of its proper divisors (77187537).

145341231 is a wasteful number, since it uses less digits than its factorization.

145341231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33022.

The product of its digits is 1440, while the sum is 24.

The square root of 145341231 is about 12055.7550987070. The cubic root of 145341231 is about 525.7705763585.

Adding to 145341231 its reverse (132143541), we get a palindrome (277484772).

The spelling of 145341231 in words is "one hundred forty-five million, three hundred forty-one thousand, two hundred thirty-one".