20301232431 has 12 divisors (see below), whose sum is σ = 28754226632. Its totient is φ = 12738027648.

The previous prime is 20301232381. The next prime is 20301232433. The reversal of 20301232431 is 13423210302.

It is not a de Polignac number, because 20301232431 - 2²⁵ = 20267677999 is a prime.

It is a super-2 number, since 2×20301232431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20301232398 and 20301232407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301232433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11706880 + ... + 11708613.

Almost surely, 2^20301232431 is an apocalyptic number.

20301232431 is a deficient number, since it is larger than the sum of its proper divisors (8452994201).

20301232431 is a wasteful number, since it uses less digits than its factorization.

20301232431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23415530 (or 23415513 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20301232431 its reverse (13423210302), we get a palindrome (33724442733).

The spelling of 20301232431 in words is "twenty billion, three hundred one million, two hundred thirty-two thousand, four hundred thirty-one".