30431411321 has 4 divisors (see below), whose sum is σ = 30433304052. Its totient is φ = 30429518592.

The previous prime is 30431411303. The next prime is 30431411327. The reversal of 30431411321 is 12311413403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12311413403 = 87977 ⋅139939.

It can be written as a sum of positive squares in 2 ways, for example, as 22616851321 + 7814560000 = 150389^2 + 88400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30431411321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30431411327) 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, 922040 + ... + 954473.

It is an arithmetic number, because the mean of its divisors is an integer number (7608326013).

Almost surely, 2^30431411321 is an apocalyptic number.

It is an amenable number.

30431411321 is a deficient number, since it is larger than the sum of its proper divisors (1892731).

30431411321 is a wasteful number, since it uses less digits than its factorization.

30431411321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892730.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 30431411321 its reverse (12311413403), we get a palindrome (42742824724).

The spelling of 30431411321 in words is "thirty billion, four hundred thirty-one million, four hundred eleven thousand, three hundred twenty-one".