131420305 has 8 divisors (see below), whose sum is σ = 157791744. Its totient is φ = 105078000.

The previous prime is 131420297. The next prime is 131420309. The reversal of 131420305 is 503024131.

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

It is not a de Polignac number, because 131420305 - 2³ = 131420297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131420309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4330 + ... + 16780.

It is an arithmetic number, because the mean of its divisors is an integer number (19723968).

Almost surely, 2^131420305 is an apocalyptic number.

It is an amenable number.

131420305 is a deficient number, since it is larger than the sum of its proper divisors (26371439).

131420305 is a wasteful number, since it uses less digits than its factorization.

131420305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14567.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 131420305 is about 11463.8695474085. The cubic root of 131420305 is about 508.4178896040.

Adding to 131420305 its reverse (503024131), we get a palindrome (634444436).

The spelling of 131420305 in words is "one hundred thirty-one million, four hundred twenty thousand, three hundred five".