201340231420 has 24 divisors (see below), whose sum is σ = 422877123648. Its totient is φ = 80524161600.

The previous prime is 201340231387. The next prime is 201340231441. The reversal of 201340231420 is 24132043102.

It is a junction number, because it is equal to n+sod(n) for n = 201340231391 and 201340231400.

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, 606676 + ... + 877915.

It is an arithmetic number, because the mean of its divisors is an integer number (17619880152).

Almost surely, 2^201340231420 is an apocalyptic number.

201340231420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201340231420 is an abundant number, since it is smaller than the sum of its proper divisors (221536892228).

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

201340231420 is a wasteful number, since it uses less digits than its factorization.

201340231420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491381 (or 1491379 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 201340231420 its reverse (24132043102), we get a palindrome (225472274522).

The spelling of 201340231420 in words is "two hundred one billion, three hundred forty million, two hundred thirty-one thousand, four hundred twenty".