30823400609 has 4 divisors (see below), whose sum is σ = 30955690116. Its totient is φ = 30691111104.

The previous prime is 30823400599. The next prime is 30823400623. The reversal of 30823400609 is 90600432803.

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: 90600432803 = 461 ⋅196530223.

It can be written as a sum of positive squares in 2 ways, for example, as 11918525584 + 18904875025 = 109172^2 + 137495^2 .

It is a cyclic number.

It is not a de Polignac number, because 30823400609 - 2⁴ = 30823400593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30823400639) 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, 66144404 + ... + 66144869.

It is an arithmetic number, because the mean of its divisors is an integer number (7738922529).

Almost surely, 2^30823400609 is an apocalyptic number.

It is an amenable number.

30823400609 is a deficient number, since it is larger than the sum of its proper divisors (132289507).

30823400609 is a wasteful number, since it uses less digits than its factorization.

30823400609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132289506.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 30823400609 in words is "thirty billion, eight hundred twenty-three million, four hundred thousand, six hundred nine".