131265770 has 16 divisors (see below), whose sum is σ = 236636640. Its totient is φ = 52426704.

The previous prime is 131265767. The next prime is 131265809. The reversal of 131265770 is 77562131.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 2780 + ... + 16439.

It is an arithmetic number, because the mean of its divisors is an integer number (14789790).

Almost surely, 2^131265770 is an apocalyptic number.

131265770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131265770 is a deficient number, since it is larger than the sum of its proper divisors (105370870).

131265770 is a wasteful number, since it uses less digits than its factorization.

131265770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19909.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 131265770 is about 11457.1274759427. The cubic root of 131265770 is about 508.2185313327.

The spelling of 131265770 in words is "one hundred thirty-one million, two hundred sixty-five thousand, seven hundred seventy".