203214212440 has 32 divisors (see below), whose sum is σ = 457477048080. Its totient is φ = 81242116992.

The previous prime is 203214212401. The next prime is 203214212447. The reversal of 203214212440 is 44212412302.

It is a super-2 number, since 2×203214212440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203214212447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285887 + ... + 1435246.

Almost surely, 2^203214212440 is an apocalyptic number.

203214212440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203214212440 is an abundant number, since it is smaller than the sum of its proper divisors (254262835640).

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

203214212440 is a wasteful number, since it uses less digits than its factorization.

203214212440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723011 (or 2723007 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 203214212440 its reverse (44212412302), we get a palindrome (247426624742).

The spelling of 203214212440 in words is "two hundred three billion, two hundred fourteen million, two hundred twelve thousand, four hundred forty".