30313878140 has 72 divisors (see below), whose sum is σ = 78780270240. Its totient is φ = 9593835264.

The previous prime is 30313878139. The next prime is 30313878167. The reversal of 30313878140 is 4187831303.

It is a junction number, because it is equal to n+sod(n) for n = 30313878094 and 30313878103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 616955 + ... + 664274.

It is an arithmetic number, because the mean of its divisors is an integer number (1094170420).

Almost surely, 2^30313878140 is an apocalyptic number.

It is an amenable number.

30313878140 is an abundant number, since it is smaller than the sum of its proper divisors (48466392100).

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

30313878140 is a wasteful number, since it uses less digits than its factorization.

30313878140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281271 (or 1281256 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 30313878140 in words is "thirty billion, three hundred thirteen million, eight hundred seventy-eight thousand, one hundred forty".