423931317 has 4 divisors (see below), whose sum is σ = 565241760. Its totient is φ = 282620876.

The previous prime is 423931303. The next prime is 423931351. The reversal of 423931317 is 713139324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423931317 - 2⁸ = 423931061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423931217) 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, 70655217 + ... + 70655222.

It is an arithmetic number, because the mean of its divisors is an integer number (141310440).

Almost surely, 2^423931317 is an apocalyptic number.

It is an amenable number.

423931317 is a deficient number, since it is larger than the sum of its proper divisors (141310443).

423931317 is a wasteful number, since it uses less digits than its factorization.

423931317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141310442.

The product of its digits is 13608, while the sum is 33.

The square root of 423931317 is about 20589.5924437566. The cubic root of 423931317 is about 751.2165837206.

The spelling of 423931317 in words is "four hundred twenty-three million, nine hundred thirty-one thousand, three hundred seventeen".