30530831078 has 12 divisors (see below), whose sum is σ = 50338023540. Its totient is φ = 13877650380.

The previous prime is 30530831077. The next prime is 30530831081. The reversal of 30530831078 is 87013803503.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30530831077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63079988 + ... + 63080471.

It is an arithmetic number, because the mean of its divisors is an integer number (4194835295).

Almost surely, 2^30530831078 is an apocalyptic number.

30530831078 is a deficient number, since it is larger than the sum of its proper divisors (19807192462).

30530831078 is a wasteful number, since it uses less digits than its factorization.

30530831078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126160483 (or 126160472 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 30530831078 in words is "thirty billion, five hundred thirty million, eight hundred thirty-one thousand, seventy-eight".