30321818040 has 64 divisors (see below), whose sum is σ = 95753116800. Its totient is φ = 7660248192.

The previous prime is 30321818011. The next prime is 30321818041. The reversal of 30321818040 is 4081812303.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 30321817989 and 30321818007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321818041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6647242 + ... + 6651801.

It is an arithmetic number, because the mean of its divisors is an integer number (1496142450).

Almost surely, 2^30321818040 is an apocalyptic number.

30321818040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30321818040 is an abundant number, since it is smaller than the sum of its proper divisors (65431298760).

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

30321818040 is a wasteful number, since it uses less digits than its factorization.

30321818040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13299076 (or 13299072 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The spelling of 30321818040 in words is "thirty billion, three hundred twenty-one million, eight hundred eighteen thousand, forty".