20101331203230 has 64 divisors (see below), whose sum is σ = 51305839522560. Its totient is φ = 5025878129664.

The previous prime is 20101331203049. The next prime is 20101331203231. The reversal of 20101331203230 is 3230213310102.

It is a super-2 number, since 2×20101331203230² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20101331203197 and 20101331203206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101331203231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181725604 + ... + 181836183.

It is an arithmetic number, because the mean of its divisors is an integer number (801653742540).

Almost surely, 2^{20101331203230} is an apocalyptic number.

20101331203230 is an abundant number, since it is smaller than the sum of its proper divisors (31204508319330).

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

20101331203230 is a wasteful number, since it uses less digits than its factorization.

20101331203230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363561913.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20101331203230 its reverse (3230213310102), we get a palindrome (23331544513332).

The spelling of 20101331203230 in words is "twenty trillion, one hundred one billion, three hundred thirty-one million, two hundred three thousand, two hundred thirty".