131566355 has 8 divisors (see below), whose sum is σ = 166189200. Its totient is φ = 99713376.

The previous prime is 131566333. The next prime is 131566361. The reversal of 131566355 is 553665131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 131566355 - 2⁶ = 131566291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692360 + ... + 692549.

It is an arithmetic number, because the mean of its divisors is an integer number (20773650).

Almost surely, 2^131566355 is an apocalyptic number.

131566355 is a deficient number, since it is larger than the sum of its proper divisors (34622845).

131566355 is a wasteful number, since it uses less digits than its factorization.

131566355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384933.

The product of its digits is 40500, while the sum is 35.

The square root of 131566355 is about 11470.2377917810. The cubic root of 131566355 is about 508.6061581848.

The spelling of 131566355 in words is "one hundred thirty-one million, five hundred sixty-six thousand, three hundred fifty-five".