131555266 has 8 divisors (see below), whose sum is σ = 197498700. Its totient is φ = 65722368.

The previous prime is 131555213. The next prime is 131555267. The reversal of 131555266 is 662555131.

It can be written as a sum of positive squares in 2 ways, for example, as 123854641 + 7700625 = 11129^2 + 2775^2 .

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

It is not an unprimeable number, because it can be changed into a prime (131555267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24591 + ... + 29458.

Almost surely, 2^131555266 is an apocalyptic number.

131555266 is a deficient number, since it is larger than the sum of its proper divisors (65943434).

131555266 is a wasteful number, since it uses less digits than its factorization.

131555266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55268.

The product of its digits is 27000, while the sum is 34.

The square root of 131555266 is about 11469.7544001604. The cubic root of 131555266 is about 508.5918685838.

The spelling of 131555266 in words is "one hundred thirty-one million, five hundred fifty-five thousand, two hundred sixty-six".