231054533 has 4 divisors (see below), whose sum is σ = 231404748. Its totient is φ = 230704320.

The previous prime is 231054517. The next prime is 231054541. The reversal of 231054533 is 335450132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 133795489 + 97259044 = 11567^2 + 9862^2 .

It is a cyclic number.

It is not a de Polignac number, because 231054533 - 2⁴ = 231054517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231054553) 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, 174116 + ... + 175437.

It is an arithmetic number, because the mean of its divisors is an integer number (57851187).

Almost surely, 2^231054533 is an apocalyptic number.

It is an amenable number.

231054533 is a deficient number, since it is larger than the sum of its proper divisors (350215).

231054533 is an equidigital number, since it uses as much as digits as its factorization.

231054533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350214.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 231054533 is about 15200.4780516930. The cubic root of 231054533 is about 613.6275234528.

The spelling of 231054533 in words is "two hundred thirty-one million, fifty-four thousand, five hundred thirty-three".