20101032231 has 32 divisors (see below), whose sum is σ = 30933196800. Its totient is φ = 11373094656.

The previous prime is 20101032187. The next prime is 20101032241. The reversal of 20101032231 is 13223010102.

It is not a de Polignac number, because 20101032231 - 2¹⁹ = 20100507943 is a prime.

It is a super-2 number, since 2×20101032231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20101032231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101032241) 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, 1133370 + ... + 1150968.

It is an arithmetic number, because the mean of its divisors is an integer number (966662400).

Almost surely, 2^20101032231 is an apocalyptic number.

20101032231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20101032231 is a deficient number, since it is larger than the sum of its proper divisors (10832164569).

20101032231 is a wasteful number, since it uses less digits than its factorization.

20101032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18143.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20101032231 its reverse (13223010102), we get a palindrome (33324042333).

The spelling of 20101032231 in words is "twenty billion, one hundred one million, thirty-two thousand, two hundred thirty-one".