20302331431 has 8 divisors (see below), whose sum is σ = 20349313328. Its totient is φ = 20255400000.

The previous prime is 20302331353. The next prime is 20302331443. The reversal of 20302331431 is 13413320302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20302331431 - 2³¹ = 18154847783 is a prime.

It is a super-2 number, since 2×20302331431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302331131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 861556 + ... + 884806.

It is an arithmetic number, because the mean of its divisors is an integer number (2543664166).

Almost surely, 2^20302331431 is an apocalyptic number.

20302331431 is a deficient number, since it is larger than the sum of its proper divisors (46981897).

20302331431 is a wasteful number, since it uses less digits than its factorization.

20302331431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25233.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20302331431 its reverse (13413320302), we get a palindrome (33715651733).

The spelling of 20302331431 in words is "twenty billion, three hundred two million, three hundred thirty-one thousand, four hundred thirty-one".