20331021230 has 32 divisors (see below), whose sum is σ = 40056998688. Its totient is φ = 7383772800.

The previous prime is 20331021209. The next prime is 20331021251. The reversal of 20331021230 is 3212013302.

It is an interprime number because it is at equal distance from previous prime (20331021209) and next prime (20331021251).

It is a junction number, because it is equal to n+sod(n) for n = 20331021199 and 20331021208.

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, 1273976 + ... + 1289835.

It is an arithmetic number, because the mean of its divisors is an integer number (1251781209).

Almost surely, 2^20331021230 is an apocalyptic number.

20331021230 is a deficient number, since it is larger than the sum of its proper divisors (19725977458).

20331021230 is a wasteful number, since it uses less digits than its factorization.

20331021230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563892.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20331021230 its reverse (3212013302), we get a palindrome (23543034532).

The spelling of 20331021230 in words is "twenty billion, three hundred thirty-one million, twenty-one thousand, two hundred thirty".