30312310020 has 96 divisors (see below), whose sum is σ = 90240708096. Its totient is φ = 7576166400.

The previous prime is 30312310009. The next prime is 30312310031. The reversal of 30312310020 is 2001321303.

It is an interprime number because it is at equal distance from previous prime (30312310009) and next prime (30312310031).

It is a super-2 number, since 2×30312310020² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184165 + ... + 307475.

It is an arithmetic number, because the mean of its divisors is an integer number (940007376).

Almost surely, 2^30312310020 is an apocalyptic number.

30312310020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30312310020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45120354048).

30312310020 is an abundant number, since it is smaller than the sum of its proper divisors (59928398076).

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

30312310020 is a wasteful number, since it uses less digits than its factorization.

30312310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123581 (or 123579 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 30312310020 its reverse (2001321303), we get a palindrome (32313631323).

The spelling of 30312310020 in words is "thirty billion, three hundred twelve million, three hundred ten thousand, twenty".