231040743 has 8 divisors (see below), whose sum is σ = 308598000. Its totient is φ = 153755328.

The previous prime is 231040739. The next prime is 231040757. The reversal of 231040743 is 347040132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231040743 - 2² = 231040739 is a prime.

It is a super-3 number, since 3×231040743³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231040783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65968 + ... + 69381.

It is an arithmetic number, because the mean of its divisors is an integer number (38574750).

Almost surely, 2^231040743 is an apocalyptic number.

231040743 is a deficient number, since it is larger than the sum of its proper divisors (77557257).

231040743 is a wasteful number, since it uses less digits than its factorization.

231040743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135921.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 231040743 is about 15200.0244407698. The cubic root of 231040743 is about 613.6153155240.

Adding to 231040743 its reverse (347040132), we get a palindrome (578080875).

The spelling of 231040743 in words is "two hundred thirty-one million, forty thousand, seven hundred forty-three".