30311442221143 has 4 divisors (see below), whose sum is σ = 31130670389320. Its totient is φ = 29492214052968.

The previous prime is 30311442221141. The next prime is 30311442221147. The reversal of 30311442221143 is 34112224411303.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30311442221143 - 2¹ = 30311442221141 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 (30311442221141) 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, 409614084033 + ... + 409614084106.

It is an arithmetic number, because the mean of its divisors is an integer number (7782667597330).

Almost surely, 2^{30311442221143} is an apocalyptic number.

30311442221143 is a deficient number, since it is larger than the sum of its proper divisors (819228168177).

30311442221143 is an equidigital number, since it uses as much as digits as its factorization.

30311442221143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819228168176.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 30311442221143 its reverse (34112224411303), we get a palindrome (64423666632446).

The spelling of 30311442221143 in words is "thirty trillion, three hundred eleven billion, four hundred forty-two million, two hundred twenty-one thousand, one hundred forty-three".