145631143 has 16 divisors (see below), whose sum is σ = 175563520. Its totient is φ = 118008576.

The previous prime is 145631119. The next prime is 145631183. The reversal of 145631143 is 341136541.

It is not a de Polignac number, because 145631143 - 2¹⁷ = 145500071 is a prime.

It is a super-2 number, since 2×145631143² = 42416859622972898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145631183) 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, 88696 + ... + 90322.

It is an arithmetic number, because the mean of its divisors is an integer number (10972720).

Almost surely, 2^145631143 is an apocalyptic number.

145631143 is a deficient number, since it is larger than the sum of its proper divisors (29932377).

145631143 is a wasteful number, since it uses less digits than its factorization.

145631143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326.

The product of its digits is 4320, while the sum is 28.

The square root of 145631143 is about 12067.7729096963. The cubic root of 145631143 is about 526.1199288482.

Adding to 145631143 its reverse (341136541), we get a palindrome (486767684).

The spelling of 145631143 in words is "one hundred forty-five million, six hundred thirty-one thousand, one hundred forty-three".