202343212340 has 24 divisors (see below), whose sum is σ = 425119304232. Its totient is φ = 80899464320.

The previous prime is 202343212297. The next prime is 202343212391. The reversal of 202343212340 is 43212343202.

It can be written as a sum of positive squares in 4 ways, for example, as 19949302564 + 182393909776 = 141242^2 + 427076^2 .

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, 2319899 + ... + 2405538.

It is an arithmetic number, because the mean of its divisors is an integer number (17713304343).

Almost surely, 2^202343212340 is an apocalyptic number.

202343212340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202343212340 is an abundant number, since it is smaller than the sum of its proper divisors (222776091892).

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

202343212340 is a wasteful number, since it uses less digits than its factorization.

202343212340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727587 (or 4727585 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 202343212340 its reverse (43212343202), we get a palindrome (245555555542).

The spelling of 202343212340 in words is "two hundred two billion, three hundred forty-three million, two hundred twelve thousand, three hundred forty".