30312442144 has 24 divisors (see below), whose sum is σ = 63188069868. Its totient is φ = 14264678400.

The previous prime is 30312442117. The next prime is 30312442157. The reversal of 30312442144 is 44124421303.

It can be written as a sum of positive squares in 2 ways, for example, as 30269040400 + 43401744 = 173980^2 + 6588^2 .

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, 27860157 + ... + 27861244.

Almost surely, 2^30312442144 is an apocalyptic number.

30312442144 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30312442144 is an abundant number, since it is smaller than the sum of its proper divisors (32875627724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30312442144 is a wasteful number, since it uses less digits than its factorization.

30312442144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55721428 (or 55721420 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 30312442144 its reverse (44124421303), we get a palindrome (74436863447).

The spelling of 30312442144 in words is "thirty billion, three hundred twelve million, four hundred forty-two thousand, one hundred forty-four".