30531512253140 has 48 divisors (see below), whose sum is σ = 65020112277120. Its totient is φ = 12040431231360.

The previous prime is 30531512253133. The next prime is 30531512253157. The reversal of 30531512253140 is 4135221513503.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30531512253140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187206551 + ... + 187369569.

It is an arithmetic number, because the mean of its divisors is an integer number (1354585672440).

Almost surely, 2^{30531512253140} is an apocalyptic number.

It is an amenable number.

30531512253140 is an abundant number, since it is smaller than the sum of its proper divisors (34488600023980).

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

30531512253140 is a wasteful number, since it uses less digits than its factorization.

30531512253140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294992 (or 294990 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 30531512253140 its reverse (4135221513503), we get a palindrome (34666733766643).

The spelling of 30531512253140 in words is "thirty trillion, five hundred thirty-one billion, five hundred twelve million, two hundred fifty-three thousand, one hundred forty".