20213301231 has 6 divisors (see below), whose sum is σ = 29196990680. Its totient is φ = 13475534148.

The previous prime is 20213301203. The next prime is 20213301247. The reversal of 20213301231 is 13210331202.

It is not a de Polignac number, because 20213301231 - 2⁷ = 20213301103 is a prime.

It is a super-2 number, since 2×20213301231² (a number of 21 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 (20213302231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122961171 + ... + 1122961188.

Almost surely, 2^20213301231 is an apocalyptic number.

20213301231 is a deficient number, since it is larger than the sum of its proper divisors (8983689449).

20213301231 is a wasteful number, since it uses less digits than its factorization.

20213301231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245922365 (or 2245922362 counting only the distinct ones).

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

Adding to 20213301231 its reverse (13210331202), we get a palindrome (33423632433).

The spelling of 20213301231 in words is "twenty billion, two hundred thirteen million, three hundred one thousand, two hundred thirty-one".