30440442273 has 4 divisors (see below), whose sum is σ = 40587256368. Its totient is φ = 20293628180.

The previous prime is 30440442239. The next prime is 30440442337. The reversal of 30440442273 is 37224404403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30440442273 - 2¹⁴ = 30440425889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30440442173) 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, 5073407043 + ... + 5073407048.

It is an arithmetic number, because the mean of its divisors is an integer number (10146814092).

Almost surely, 2^30440442273 is an apocalyptic number.

It is an amenable number.

30440442273 is a deficient number, since it is larger than the sum of its proper divisors (10146814095).

30440442273 is a wasteful number, since it uses less digits than its factorization.

30440442273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10146814094.

The product of its (nonzero) digits is 64512, while the sum is 33.

Adding to 30440442273 its reverse (37224404403), we get a palindrome (67664846676).

The spelling of 30440442273 in words is "thirty billion, four hundred forty million, four hundred forty-two thousand, two hundred seventy-three".