131272305 has 16 divisors (see below), whose sum is σ = 213480384. Its totient is φ = 68863680.

The previous prime is 131272301. The next prime is 131272307. The reversal of 131272305 is 503272131.

It is not a de Polignac number, because 131272305 - 2² = 131272301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131272301) 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, 70819 + ... + 72648.

It is an arithmetic number, because the mean of its divisors is an integer number (13342524).

Almost surely, 2^131272305 is an apocalyptic number.

131272305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131272305 is a deficient number, since it is larger than the sum of its proper divisors (82208079).

131272305 is a wasteful number, since it uses less digits than its factorization.

131272305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143536.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 131272305 is about 11457.4126660429. The cubic root of 131272305 is about 508.2269649936.

The spelling of 131272305 in words is "one hundred thirty-one million, two hundred seventy-two thousand, three hundred five".