20342231320 has 32 divisors (see below), whose sum is σ = 47760023520. Its totient is φ = 7783114240.

The previous prime is 20342231291. The next prime is 20342231353. The reversal of 20342231320 is 2313224302.

It is a junction number, because it is equal to n+sod(n) for n = 20342231291 and 20342231300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11054641 + ... + 11056480.

It is an arithmetic number, because the mean of its divisors is an integer number (1492500735).

Almost surely, 2^20342231320 is an apocalyptic number.

20342231320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20342231320 is an abundant number, since it is smaller than the sum of its proper divisors (27417792200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20342231320 is a wasteful number, since it uses less digits than its factorization.

20342231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22111155 (or 22111151 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20342231320 its reverse (2313224302), we get a palindrome (22655455622).

The spelling of 20342231320 in words is "twenty billion, three hundred forty-two million, two hundred thirty-one thousand, three hundred twenty".