20012132331 has 6 divisors (see below), whose sum is σ = 28906413380. Its totient is φ = 13341421548.

The previous prime is 20012132311. The next prime is 20012132347. The reversal of 20012132331 is 13323121002.

20012132331 is a `hidden beast` number, since 200 + 1 + 2 + 132 + 331 = 666.

It is not a de Polignac number, because 20012132331 - 2¹⁷ = 20012001259 is a prime.

It is a super-2 number, since 2×20012132331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012132311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111785121 + ... + 1111785138.

Almost surely, 2^20012132331 is an apocalyptic number.

20012132331 is a deficient number, since it is larger than the sum of its proper divisors (8894281049).

20012132331 is a wasteful number, since it uses less digits than its factorization.

20012132331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223570265 (or 2223570262 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20012132331 its reverse (13323121002), we get a palindrome (33335253333).

The spelling of 20012132331 in words is "twenty billion, twelve million, one hundred thirty-two thousand, three hundred thirty-one".