231740993 has 8 divisors (see below), whose sum is σ = 252969696. Its totient is φ = 210539200.

The previous prime is 231740987. The next prime is 231741017. The reversal of 231740993 is 399047132.

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

It is a cyclic number.

It is not a de Polignac number, because 231740993 - 2⁸ = 231740737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231740983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14105 + ... + 25737.

It is an arithmetic number, because the mean of its divisors is an integer number (31621212).

Almost surely, 2^231740993 is an apocalyptic number.

It is an amenable number.

231740993 is a deficient number, since it is larger than the sum of its proper divisors (21228703).

231740993 is a wasteful number, since it uses less digits than its factorization.

231740993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13455.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 231740993 is about 15223.0415160703. The cubic root of 231740993 is about 614.2346157475.

The spelling of 231740993 in words is "two hundred thirty-one million, seven hundred forty thousand, nine hundred ninety-three".