20301131331 has 20 divisors (see below), whose sum is σ = 32659181632. Its totient is φ = 12493003248.

The previous prime is 20301131329. The next prime is 20301131363. The reversal of 20301131331 is 13313110302.

It is a happy number.

20301131331 is a `hidden beast` number, since 2 + 0 + 301 + 1 + 31 + 331 = 666.

It is not a de Polignac number, because 20301131331 - 2¹ = 20301131329 is a prime.

It is a super-2 number, since 2×20301131331² (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 (20301131321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9638611 + ... + 9640716.

Almost surely, 2^20301131331 is an apocalyptic number.

20301131331 is a deficient number, since it is larger than the sum of its proper divisors (12358050301).

20301131331 is a wasteful number, since it uses less digits than its factorization.

20301131331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19279352 (or 19279343 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 20301131331 its reverse (13313110302), we get a palindrome (33614241633).

The spelling of 20301131331 in words is "twenty billion, three hundred one million, one hundred thirty-one thousand, three hundred thirty-one".