30121315040 has 48 divisors (see below), whose sum is σ = 71274621600. Its totient is φ = 12029391360.

The previous prime is 30121315031. The next prime is 30121315069. The reversal of 30121315040 is 4051312103.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48215 + ... + 250134.

It is an arithmetic number, because the mean of its divisors is an integer number (1484887950).

Almost surely, 2^30121315040 is an apocalyptic number.

It is an amenable number.

30121315040 is an abundant number, since it is smaller than the sum of its proper divisors (41153306560).

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

30121315040 is a wasteful number, since it uses less digits than its factorization.

30121315040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298995 (or 298987 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 30121315040 its reverse (4051312103), we get a palindrome (34172627143).

The spelling of 30121315040 in words is "thirty billion, one hundred twenty-one million, three hundred fifteen thousand, forty".