205014321531 has 24 divisors (see below), whose sum is σ = 317001048000. Its totient is φ = 127288100592.

The previous prime is 205014321529. The next prime is 205014321553. The reversal of 205014321531 is 135123410502.

205014321531 is a `hidden beast` number, since 2 + 0 + 501 + 4 + 3 + 2 + 153 + 1 = 666.

It is not a de Polignac number, because 205014321531 - 2¹ = 205014321529 is a prime.

It is a super-2 number, since 2×205014321531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205014321495 and 205014321504.

It is not an unprimeable number, because it can be changed into a prime (205014321521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10150201 + ... + 10170378.

It is an arithmetic number, because the mean of its divisors is an integer number (13208377000).

Almost surely, 2^205014321531 is an apocalyptic number.

205014321531 is a deficient number, since it is larger than the sum of its proper divisors (111986726469).

205014321531 is a wasteful number, since it uses less digits than its factorization.

205014321531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20320663 (or 20320660 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 205014321531 in words is "two hundred five billion, fourteen million, three hundred twenty-one thousand, five hundred thirty-one".