30903721343 has 4 divisors (see below), whose sum is σ = 33713150568. Its totient is φ = 28094292120.

The previous prime is 30903721309. The next prime is 30903721349. The reversal of 30903721343 is 34312730903.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30903721343 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 (30903721349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1404714596 + ... + 1404714617.

It is an arithmetic number, because the mean of its divisors is an integer number (8428287642).

Almost surely, 2^30903721343 is an apocalyptic number.

30903721343 is a deficient number, since it is larger than the sum of its proper divisors (2809429225).

30903721343 is a wasteful number, since it uses less digits than its factorization.

30903721343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809429224.

The product of its (nonzero) digits is 40824, while the sum is 35.

The spelling of 30903721343 in words is "thirty billion, nine hundred three million, seven hundred twenty-one thousand, three hundred forty-three".