493123931 has 4 divisors (see below), whose sum is σ = 493440192. Its totient is φ = 492807672.

The previous prime is 493123921. The next prime is 493123973. The reversal of 493123931 is 139321394.

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 493123931 - 2²² = 488929627 is a prime.

It is a super-2 number, since 2×493123931² = 486342422649785522, 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 = 493123891 and 493123900.

It is not an unprimeable number, because it can be changed into a prime (493123921) 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 3 ways as a sum of consecutive naturals, for example, 155780 + ... + 158913.

It is an arithmetic number, because the mean of its divisors is an integer number (123360048).

Almost surely, 2^493123931 is an apocalyptic number.

493123931 is a deficient number, since it is larger than the sum of its proper divisors (316261).

493123931 is a wasteful number, since it uses less digits than its factorization.

493123931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316260.

The product of its digits is 17496, while the sum is 35.

The square root of 493123931 is about 22206.3939215713. The cubic root of 493123931 is about 790.0453592500.

The spelling of 493123931 in words is "four hundred ninety-three million, one hundred twenty-three thousand, nine hundred thirty-one".