20001032331 has 32 divisors (see below), whose sum is σ = 30650918400. Its totient is φ = 11364407040.

The previous prime is 20001032329. The next prime is 20001032333. The reversal of 20001032331 is 13323010002.

It is an interprime number because it is at equal distance from previous prime (20001032329) and next prime (20001032333).

It is not a de Polignac number, because 20001032331 - 2¹ = 20001032329 is a prime.

It is a super-2 number, since 2×20001032331² (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 20001032331.

It is not an unprimeable number, because it can be changed into a prime (20001032333) 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, 3000280 + ... + 3006938.

It is an arithmetic number, because the mean of its divisors is an integer number (957841200).

Almost surely, 2^20001032331 is an apocalyptic number.

20001032331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20001032331 is a deficient number, since it is larger than the sum of its proper divisors (10649886069).

20001032331 is a wasteful number, since it uses less digits than its factorization.

20001032331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7459.

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

Adding to 20001032331 its reverse (13323010002), we get a palindrome (33324042333).

The spelling of 20001032331 in words is "twenty billion, one million, thirty-two thousand, three hundred thirty-one".