20031021330 has 32 divisors (see below), whose sum is σ = 48111840000. Its totient is φ = 5337451392.

The previous prime is 20031021299. The next prime is 20031021343. The reversal of 20031021330 is 3312013002.

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

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, 220330 + ... + 297669.

It is an arithmetic number, because the mean of its divisors is an integer number (1503495000).

Almost surely, 2^20031021330 is an apocalyptic number.

20031021330 is an abundant number, since it is smaller than the sum of its proper divisors (28080818670).

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

20031021330 is a wasteful number, since it uses less digits than its factorization.

20031021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519298.

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

Adding to 20031021330 its reverse (3312013002), we get a palindrome (23343034332).

The spelling of 20031021330 in words is "twenty billion, thirty-one million, twenty-one thousand, three hundred thirty".