145731443 has 16 divisors (see below), whose sum is σ = 174859776. Its totient is φ = 119684640.

The previous prime is 145731431. The next prime is 145731479. The reversal of 145731443 is 344137541.

It is a cyclic number.

It is not a de Polignac number, because 145731443 - 2¹⁰ = 145730419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145731413) 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, 4121 + ... + 17562.

It is an arithmetic number, because the mean of its divisors is an integer number (10928736).

Almost surely, 2^145731443 is an apocalyptic number.

145731443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145731443 is a deficient number, since it is larger than the sum of its proper divisors (29128333).

145731443 is a wasteful number, since it uses less digits than its factorization.

145731443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21754.

The product of its digits is 20160, while the sum is 32.

The square root of 145731443 is about 12071.9278907720. The cubic root of 145731443 is about 526.2406853424.

Adding to 145731443 its reverse (344137541), we get a palindrome (489868984).

The spelling of 145731443 in words is "one hundred forty-five million, seven hundred thirty-one thousand, four hundred forty-three".