30872423 has 4 divisors (see below), whose sum is σ = 30890520. Its totient is φ = 30854328.

The previous prime is 30872419. The next prime is 30872437. The reversal of 30872423 is 32427803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32427803 = 433 ⋅74891.

It is a cyclic number.

It is not a de Polignac number, because 30872423 - 2² = 30872419 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 (30872453) 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, 6188 + ... + 10001.

It is an arithmetic number, because the mean of its divisors is an integer number (7722630).

Almost surely, 2^30872423 is an apocalyptic number.

30872423 is a deficient number, since it is larger than the sum of its proper divisors (18097).

30872423 is a wasteful number, since it uses less digits than its factorization.

30872423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18096.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 30872423 is about 5556.2957984614. The cubic root of 30872423 is about 313.7065394847.

The spelling of 30872423 in words is "thirty million, eight hundred seventy-two thousand, four hundred twenty-three".