30010031321 has 4 divisors (see below), whose sum is σ = 30010378212. Its totient is φ = 30009684432.

The previous prime is 30010031267. The next prime is 30010031351. The reversal of 30010031321 is 12313001003.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12313001003 = 151 ⋅81543053.

It can be written as a sum of positive squares in 2 ways, for example, as 15261143296 + 14748888025 = 123536^2 + 121445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30010031321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30010031296 and 30010031305.

It is not an unprimeable number, because it can be changed into a prime (30010031351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73895 + ... + 255891.

It is an arithmetic number, because the mean of its divisors is an integer number (7502594553).

Almost surely, 2^30010031321 is an apocalyptic number.

It is an amenable number.

30010031321 is a deficient number, since it is larger than the sum of its proper divisors (346891).

30010031321 is a wasteful number, since it uses less digits than its factorization.

30010031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346890.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 30010031321 its reverse (12313001003), we get a palindrome (42323032324).

The spelling of 30010031321 in words is "thirty billion, ten million, thirty-one thousand, three hundred twenty-one".