423991909307 has 4 divisors (see below), whose sum is σ = 425346516360. Its totient is φ = 422637302256.

The previous prime is 423991909261. The next prime is 423991909373. The reversal of 423991909307 is 703909199324.

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 423991909307 - 2¹⁰ = 423991908283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423991909207) 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, 677303057 + ... + 677303682.

It is an arithmetic number, because the mean of its divisors is an integer number (106336629090).

Almost surely, 2^423991909307 is an apocalyptic number.

423991909307 is a deficient number, since it is larger than the sum of its proper divisors (1354607053).

423991909307 is a wasteful number, since it uses less digits than its factorization.

423991909307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354607052.

The product of its (nonzero) digits is 3306744, while the sum is 56.

The spelling of 423991909307 in words is "four hundred twenty-three billion, nine hundred ninety-one million, nine hundred nine thousand, three hundred seven".