30131212544 has 36 divisors (see below), whose sum is σ = 61130735820. Its totient is φ = 14818621440.

The previous prime is 30131212523. The next prime is 30131212561. The reversal of 30131212544 is 44521213103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13992050944 + 16139161600 = 118288^2 + 127040^2 .

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, 949139 + ... + 980370.

It is an arithmetic number, because the mean of its divisors is an integer number (1698075995).

Almost surely, 2^30131212544 is an apocalyptic number.

It is an amenable number.

30131212544 is an abundant number, since it is smaller than the sum of its proper divisors (30999523276).

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

30131212544 is an equidigital number, since it uses as much as digits as its factorization.

30131212544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929586 (or 1929572 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 30131212544 its reverse (44521213103), we get a palindrome (74652425647).

The spelling of 30131212544 in words is "thirty billion, one hundred thirty-one million, two hundred twelve thousand, five hundred forty-four".