203443432340 has 12 divisors (see below), whose sum is σ = 427231207956. Its totient is φ = 81377372928.

The previous prime is 203443432307. The next prime is 203443432351. The reversal of 203443432340 is 43234344302.

It can be written as a sum of positive squares in 2 ways, for example, as 58851848836 + 144591583504 = 242594^2 + 380252^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203443432297 and 203443432306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5086085789 + ... + 5086085828.

It is an arithmetic number, because the mean of its divisors is an integer number (35602600663).

Almost surely, 2^203443432340 is an apocalyptic number.

203443432340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203443432340 is an abundant number, since it is smaller than the sum of its proper divisors (223787775616).

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

203443432340 is a wasteful number, since it uses less digits than its factorization.

203443432340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10172171626 (or 10172171624 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 32.

Adding to 203443432340 its reverse (43234344302), we get a palindrome (246677776642).

The spelling of 203443432340 in words is "two hundred three billion, four hundred forty-three million, four hundred thirty-two thousand, three hundred forty".