202343213440 has 64 divisors (see below), whose sum is σ = 492853746960. Its totient is φ = 79410153472.

The previous prime is 202343213411. The next prime is 202343213441. The reversal of 202343213440 is 44312343202.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 202343213399 and 202343213408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202343213441) 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, 2948734 + ... + 3016573.

Almost surely, 2^202343213440 is an apocalyptic number.

202343213440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202343213440 is an abundant number, since it is smaller than the sum of its proper divisors (290510533520).

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

202343213440 is an equidigital number, since it uses as much as digits as its factorization.

202343213440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5965379 (or 5965367 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 202343213440 its reverse (44312343202), we get a palindrome (246655556642).

The spelling of 202343213440 in words is "two hundred two billion, three hundred forty-three million, two hundred thirteen thousand, four hundred forty".