145131344 has 20 divisors (see below), whose sum is σ = 283979220. Its totient is φ = 71846400.

The previous prime is 145131319. The next prime is 145131377. The reversal of 145131344 is 443131541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 137358400 + 7772944 = 11720^2 + 2788^2 .

It is a super-2 number, since 2×145131344² = 42126214022492672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43289 + ... + 46520.

It is an arithmetic number, because the mean of its divisors is an integer number (14198961).

Almost surely, 2^145131344 is an apocalyptic number.

It is an amenable number.

145131344 is a deficient number, since it is larger than the sum of its proper divisors (138847876).

145131344 is a wasteful number, since it uses less digits than its factorization.

145131344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89918 (or 89912 counting only the distinct ones).

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

The square root of 145131344 is about 12047.0471070715. The cubic root of 145131344 is about 525.5173663305.

Adding to 145131344 its reverse (443131541), we get a palindrome (588262885).

The spelling of 145131344 in words is "one hundred forty-five million, one hundred thirty-one thousand, three hundred forty-four".