30303143161 has 4 divisors (see below), whose sum is σ = 32085681012. Its totient is φ = 28520605312.

The previous prime is 30303143131. The next prime is 30303143197. The reversal of 30303143161 is 16134130303.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25426215936 + 4876927225 = 159456^2 + 69835^2 .

It is a cyclic number.

It is not a de Polignac number, because 30303143161 - 2³¹ = 28155659513 is a prime.

It is a super-2 number, since 2×30303143161² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30303143131) 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, 891268900 + ... + 891268933.

It is an arithmetic number, because the mean of its divisors is an integer number (8021420253).

Almost surely, 2^30303143161 is an apocalyptic number.

It is an amenable number.

30303143161 is a deficient number, since it is larger than the sum of its proper divisors (1782537851).

30303143161 is a wasteful number, since it uses less digits than its factorization.

30303143161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782537850.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 30303143161 its reverse (16134130303), we get a palindrome (46437273464).

The spelling of 30303143161 in words is "thirty billion, three hundred three million, one hundred forty-three thousand, one hundred sixty-one".