203440313142 has 72 divisors (see below), whose sum is σ = 487711202160. Its totient is φ = 61240212000.

The previous prime is 203440313129. The next prime is 203440313171. The reversal of 203440313142 is 241313044302.

203440313142 is a `hidden beast` number, since 2 + 0 + 344 + 0 + 3 + 1 + 314 + 2 = 666.

It is a super-2 number, since 2×203440313142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19584 + ... + 638172.

Almost surely, 2^203440313142 is an apocalyptic number.

203440313142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 203440313142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243855601080).

203440313142 is an abundant number, since it is smaller than the sum of its proper divisors (284270889018).

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

203440313142 is a wasteful number, since it uses less digits than its factorization.

203440313142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618770 (or 618756 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 203440313142 its reverse (241313044302), we get a palindrome (444753357444).

The spelling of 203440313142 in words is "two hundred three billion, four hundred forty million, three hundred thirteen thousand, one hundred forty-two".