203402340340 has 24 divisors (see below), whose sum is σ = 427579488000. Its totient is φ = 81278160288.

The previous prime is 203402340319. The next prime is 203402340377. The reversal of 203402340340 is 43043204302.

It is a super-3 number, since 3×203402340340³ (a number of 35 digits) contains 333 as substring.

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, 5153340 + ... + 5192659.

It is an arithmetic number, because the mean of its divisors is an integer number (17815812000).

Almost surely, 2^203402340340 is an apocalyptic number.

203402340340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203402340340 is an abundant number, since it is smaller than the sum of its proper divisors (224177147660).

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

203402340340 is a wasteful number, since it uses less digits than its factorization.

203402340340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10346991 (or 10346989 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 203402340340 its reverse (43043204302), we get a palindrome (246445544642).

The spelling of 203402340340 in words is "two hundred three billion, four hundred two million, three hundred forty thousand, three hundred forty".