535231231 has 4 divisors (see below), whose sum is σ = 535532200. Its totient is φ = 534930264.

The previous prime is 535231199. The next prime is 535231243. The reversal of 535231231 is 132132535.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 535231231 - 2⁵ = 535231199 is a prime.

It is a super-2 number, since 2×535231231² = 572944941275550722, 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 = 535231196 and 535231205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (535231531) 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, 147801 + ... + 151378.

It is an arithmetic number, because the mean of its divisors is an integer number (133883050).

Almost surely, 2^535231231 is an apocalyptic number.

535231231 is a deficient number, since it is larger than the sum of its proper divisors (300969).

535231231 is a wasteful number, since it uses less digits than its factorization.

535231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300968.

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

The square root of 535231231 is about 23135.0649664098. The cubic root of 535231231 is about 811.9210770235.

Adding to 535231231 its reverse (132132535), we get a palindrome (667363766).

It can be divided in two parts, 535 and 231231, that multiplied together give a triangular number (123708585 = T₁₅₇₂₉).

The spelling of 535231231 in words is "five hundred thirty-five million, two hundred thirty-one thousand, two hundred thirty-one".