131145023 has 8 divisors (see below), whose sum is σ = 135250560. Its totient is φ = 127102360.

The previous prime is 131144963. The next prime is 131145029. The reversal of 131145023 is 320541131.

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

It is a cyclic number.

It is not a de Polignac number, because 131145023 - 2¹⁸ = 130882879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131144986 and 131145004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131145029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11465 + ... + 19842.

It is an arithmetic number, because the mean of its divisors is an integer number (16906320).

Almost surely, 2^131145023 is an apocalyptic number.

131145023 is a deficient number, since it is larger than the sum of its proper divisors (4105537).

131145023 is an equidigital number, since it uses as much as digits as its factorization.

131145023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31437.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 131145023 is about 11451.8567490167. The cubic root of 131145023 is about 508.0626524396.

Adding to 131145023 its reverse (320541131), we get a palindrome (451686154).

The spelling of 131145023 in words is "one hundred thirty-one million, one hundred forty-five thousand, twenty-three".