535991331 has 16 divisors (see below), whose sum is σ = 726153120. Its totient is φ = 351601920.

The previous prime is 535991329. The next prime is 535991353. The reversal of 535991331 is 133199535.

It is not a de Polignac number, because 535991331 - 2¹ = 535991329 is a prime.

It is a super-2 number, since 2×535991331² = 574573413814303122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 535991331.

It is not an unprimeable number, because it can be changed into a prime (535991381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98305 + ... + 103613.

It is an arithmetic number, because the mean of its divisors is an integer number (45384570).

Almost surely, 2^535991331 is an apocalyptic number.

535991331 is a deficient number, since it is larger than the sum of its proper divisors (190161789).

535991331 is a wasteful number, since it uses less digits than its factorization.

535991331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846.

The product of its digits is 54675, while the sum is 39.

The square root of 535991331 is about 23151.4865829389. The cubic root of 535991331 is about 812.3052407670.

The spelling of 535991331 in words is "five hundred thirty-five million, nine hundred ninety-one thousand, three hundred thirty-one".