30440003423 has 4 divisors (see below), whose sum is σ = 30440938920. Its totient is φ = 30439067928.

The previous prime is 30440003371. The next prime is 30440003431. The reversal of 30440003423 is 32430004403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32430004403 = 19 ⋅1706842337.

It is a cyclic number.

It is not a de Polignac number, because 30440003423 - 2³⁰ = 29366261599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440009423) 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, 417113 + ... + 484626.

It is an arithmetic number, because the mean of its divisors is an integer number (7610234730).

Almost surely, 2^30440003423 is an apocalyptic number.

30440003423 is a deficient number, since it is larger than the sum of its proper divisors (935497).

30440003423 is an equidigital number, since it uses as much as digits as its factorization.

30440003423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935496.

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 30440003423 its reverse (32430004403), we get a palindrome (62870007826).

The spelling of 30440003423 in words is "thirty billion, four hundred forty million, three thousand, four hundred twenty-three".