30311123144144 has 20 divisors (see below), whose sum is σ = 58776216464196. Its totient is φ = 15143067282432.

The previous prime is 30311123144119. The next prime is 30311123144207. The reversal of 30311123144144 is 44144132111303.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3046141902400 + 27264981241744 = 1745320^2 + 5221588^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30311123144144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780873089 + ... + 780911904.

Almost surely, 2^{30311123144144} is an apocalyptic number.

It is an amenable number.

30311123144144 is a deficient number, since it is larger than the sum of its proper divisors (28465093320052).

30311123144144 is a wasteful number, since it uses less digits than its factorization.

30311123144144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561786214 (or 1561786208 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 30311123144144 its reverse (44144132111303), we get a palindrome (74455255255447).

The spelling of 30311123144144 in words is "thirty trillion, three hundred eleven billion, one hundred twenty-three million, one hundred forty-four thousand, one hundred forty-four".