131265400 has 48 divisors (see below), whose sum is σ = 348794640. Its totient is φ = 45004800.

The previous prime is 131265391. The next prime is 131265403. The reversal of 131265400 is 4562131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131265403) 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 11 ways as a sum of consecutive naturals, for example, 45481 + ... + 48280.

It is an arithmetic number, because the mean of its divisors is an integer number (7266555).

Almost surely, 2^131265400 is an apocalyptic number.

131265400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131265400 is an abundant number, since it is smaller than the sum of its proper divisors (217529240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131265400 is a wasteful number, since it uses less digits than its factorization.

131265400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93784 (or 93775 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 131265400 is about 11457.1113287774. Note that the first 3 decimals coincide. The cubic root of 131265400 is about 508.2180538255.

The spelling of 131265400 in words is "one hundred thirty-one million, two hundred sixty-five thousand, four hundred".