423710109 has 28 divisors (see below), whose sum is σ = 637437600. Its totient is φ = 281512584.

The previous prime is 423710107. The next prime is 423710129. The reversal of 423710109 is 901017324.

It is not a de Polignac number, because 423710109 - 2¹ = 423710107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423710107) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 260902 + ... + 262520.

Almost surely, 2^423710109 is an apocalyptic number.

It is an amenable number.

423710109 is a deficient number, since it is larger than the sum of its proper divisors (213727491).

423710109 is an equidigital number, since it uses as much as digits as its factorization.

423710109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996 (or 1981 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 423710109 is about 20584.2199026342. The cubic root of 423710109 is about 751.0858990057.

The spelling of 423710109 in words is "four hundred twenty-three million, seven hundred ten thousand, one hundred nine".