535321231 has 4 divisors (see below), whose sum is σ = 536272632. Its totient is φ = 534369832.

The previous prime is 535321229. The next prime is 535321243. The reversal of 535321231 is 132123535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132123535 = 5 ⋅26424707.

It is a cyclic number.

It is not a de Polignac number, because 535321231 - 2¹ = 535321229 is a prime.

It is a super-2 number, since 2×535321231² = 573137640718710722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 535321196 and 535321205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (535321201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474856 + ... + 475981.

It is an arithmetic number, because the mean of its divisors is an integer number (134068158).

Almost surely, 2^535321231 is an apocalyptic number.

535321231 is a deficient number, since it is larger than the sum of its proper divisors (951401).

535321231 is an equidigital number, since it uses as much as digits as its factorization.

535321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951400.

The product of its digits is 2700, while the sum is 25.

The square root of 535321231 is about 23137.0099840061. The cubic root of 535321231 is about 811.9665830885.

Adding to 535321231 its reverse (132123535), we get a palindrome (667444766).

The spelling of 535321231 in words is "five hundred thirty-five million, three hundred twenty-one thousand, two hundred thirty-one".