205560131 has 8 divisors (see below), whose sum is σ = 245140224. Its totient is φ = 168533640.

The previous prime is 205560127. The next prime is 205560137. The reversal of 205560131 is 131065502.

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 205560131 - 2² = 205560127 is a prime.

It is a super-2 number, since 2×205560131² = 84509934913474322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 205560097 and 205560106.

It is not an unprimeable number, because it can be changed into a prime (205560137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638225 + ... + 638546.

It is an arithmetic number, because the mean of its divisors is an integer number (30642528).

Almost surely, 2^205560131 is an apocalyptic number.

205560131 is a deficient number, since it is larger than the sum of its proper divisors (39580093).

205560131 is a wasteful number, since it uses less digits than its factorization.

205560131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276801.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 205560131 is about 14337.3683429003. The cubic root of 205560131 is about 590.1733963205.

The spelling of 205560131 in words is "two hundred five million, five hundred sixty thousand, one hundred thirty-one".