30231331020020 has 48 divisors (see below), whose sum is σ = 68402459784960. Its totient is φ = 11156926678656.

The previous prime is 30231331020019. The next prime is 30231331020061. The reversal of 30231331020020 is 2002013313203.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30231331019974 and 30231331020001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27644510 + ... + 28717269.

It is an arithmetic number, because the mean of its divisors is an integer number (1425051245520).

Almost surely, 2^{30231331020020} is an apocalyptic number.

It is an amenable number.

30231331020020 is an abundant number, since it is smaller than the sum of its proper divisors (38171128764940).

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

30231331020020 is a wasteful number, since it uses less digits than its factorization.

30231331020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56363864 (or 56363862 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30231331020020 its reverse (2002013313203), we get a palindrome (32233344333223).

The spelling of 30231331020020 in words is "thirty trillion, two hundred thirty-one billion, three hundred thirty-one million, twenty thousand, twenty".