131145465 has 32 divisors (see below), whose sum is σ = 232344576. Its totient is φ = 62631360.

The previous prime is 131145439. The next prime is 131145473. The reversal of 131145465 is 564541131.

It is a happy number.

It is not a de Polignac number, because 131145465 - 2¹² = 131141369 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5124 + ... + 16986.

It is an arithmetic number, because the mean of its divisors is an integer number (7260768).

Almost surely, 2^131145465 is an apocalyptic number.

131145465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131145465 is a deficient number, since it is larger than the sum of its proper divisors (101199111).

131145465 is a wasteful number, since it uses less digits than its factorization.

131145465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11949.

The product of its digits is 7200, while the sum is 30.

The square root of 131145465 is about 11451.8760471811. The cubic root of 131145465 is about 508.0632232160.

Adding to 131145465 its reverse (564541131), we get a palindrome (695686596).

The spelling of 131145465 in words is "one hundred thirty-one million, one hundred forty-five thousand, four hundred sixty-five".