145631273 has 8 divisors (see below), whose sum is σ = 151415040. Its totient is φ = 139915440.

The previous prime is 145631263. The next prime is 145631279. The reversal of 145631273 is 372136541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145631273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145631279) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12590 + ... + 21207.

It is an arithmetic number, because the mean of its divisors is an integer number (18926880).

Almost surely, 2^145631273 is an apocalyptic number.

It is an amenable number.

145631273 is a deficient number, since it is larger than the sum of its proper divisors (5783767).

145631273 is a wasteful number, since it uses less digits than its factorization.

145631273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33967.

The product of its digits is 15120, while the sum is 32.

The square root of 145631273 is about 12067.7782959416. The cubic root of 145631273 is about 526.1200853980.

The spelling of 145631273 in words is "one hundred forty-five million, six hundred thirty-one thousand, two hundred seventy-three".