145344131 has 4 divisors (see below), whose sum is σ = 145524600. Its totient is φ = 145163664.

The previous prime is 145344127. The next prime is 145344149. The reversal of 145344131 is 131443541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145344131 - 2² = 145344127 is a prime.

It is a super-2 number, since 2×145344131² = 42249832832290322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145344131.

It is not an unprimeable number, because it can be changed into a prime (145344181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89021 + ... + 90638.

It is an arithmetic number, because the mean of its divisors is an integer number (36381150).

Almost surely, 2^145344131 is an apocalyptic number.

145344131 is a deficient number, since it is larger than the sum of its proper divisors (180469).

145344131 is an equidigital number, since it uses as much as digits as its factorization.

145344131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180468.

The product of its digits is 2880, while the sum is 26.

The square root of 145344131 is about 12055.8753726140. The cubic root of 145344131 is about 525.7740732431.

Adding to 145344131 its reverse (131443541), we get a palindrome (276787672).

The spelling of 145344131 in words is "one hundred forty-five million, three hundred forty-four thousand, one hundred thirty-one".