20000012003231 has 4 divisors (see below), whose sum is σ = 21538474465032. Its totient is φ = 18461549541432.

The previous prime is 20000012003161. The next prime is 20000012003273. The reversal of 20000012003231 is 13230021000002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20000012003231 - 2³⁴ = 19982832134047 is a prime.

It is a super-2 number, since 2×20000012003231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000012003431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769231230881 + ... + 769231230906.

It is an arithmetic number, because the mean of its divisors is an integer number (5384618616258).

Almost surely, 2^{20000012003231} is an apocalyptic number.

20000012003231 is a deficient number, since it is larger than the sum of its proper divisors (1538462461801).

20000012003231 is a wasteful number, since it uses less digits than its factorization.

20000012003231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538462461800.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20000012003231 its reverse (13230021000002), we get a palindrome (33230033003233).

The spelling of 20000012003231 in words is "twenty trillion, twelve million, three thousand, two hundred thirty-one".