1728534231 has 12 divisors (see below), whose sum is σ = 2498608008. Its totient is φ = 1151508624.

The previous prime is 1728534193. The next prime is 1728534233. The reversal of 1728534231 is 1324358271.

1728534231 is a `hidden beast` number, since 1 + 7 + 285 + 342 + 31 = 666.

It is not a de Polignac number, because 1728534231 - 2¹⁸ = 1728272087 is a prime.

It is a super-2 number, since 2×1728534231² = 5975661175477522722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728534233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57585 + ... + 82298.

It is an arithmetic number, because the mean of its divisors is an integer number (208217334).

Almost surely, 2^1728534231 is an apocalyptic number.

1728534231 is a deficient number, since it is larger than the sum of its proper divisors (770073777).

1728534231 is a wasteful number, since it uses less digits than its factorization.

1728534231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141262 (or 141259 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1728534231 is about 41575.6446853203. The cubic root of 1728534231 is about 1200.1236518414.

The spelling of 1728534231 in words is "one billion, seven hundred twenty-eight million, five hundred thirty-four thousand, two hundred thirty-one".