30231142020 has 72 divisors (see below), whose sum is σ = 91804999104. Its totient is φ = 8052506688.

The previous prime is 30231141949. The next prime is 30231142031. The reversal of 30231142020 is 2024113203.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30231141984 and 30231142002.

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 23 ways as a sum of consecutive naturals, for example, 64987 + ... + 254333.

It is an arithmetic number, because the mean of its divisors is an integer number (1275069432).

Almost surely, 2^30231142020 is an apocalyptic number.

30231142020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30231142020 is an abundant number, since it is smaller than the sum of its proper divisors (61573857084).

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

30231142020 is a wasteful number, since it uses less digits than its factorization.

30231142020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190249 (or 190244 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 30231142020 its reverse (2024113203), we get a palindrome (32255255223).

The spelling of 30231142020 in words is "thirty billion, two hundred thirty-one million, one hundred forty-two thousand, twenty".