145131 has 8 divisors (see below), whose sum is σ = 221184. Its totient is φ = 82920.

The previous prime is 145121. The next prime is 145133. The reversal of 145131 is 131541.

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

It is not a de Polignac number, because 145131 - 2¹⁴ = 128747 is a prime.

It is a super-2 number, since 2×145131² = 42126014322, which contains 22 as substring.

145131 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 145131.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145131.

It is not an unprimeable number, because it can be changed into a prime (145133) 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, 3435 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (27648).

2¹⁴⁵¹³¹ is an apocalyptic number.

145131 is a deficient number, since it is larger than the sum of its proper divisors (76053).

145131 is an equidigital number, since it uses as much as digits as its factorization.

145131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921.

The product of its digits is 60, while the sum is 15.

The square root of 145131 is about 380.9606278869. The cubic root of 145131 is about 52.5516951125.

Adding to 145131 its reverse (131541), we get a palindrome (276672).

It can be divided in two parts, 145 and 131, that added together give a triangular number (276 = T₂₃).

The spelling of 145131 in words is "one hundred forty-five thousand, one hundred thirty-one".