203211542340 has 48 divisors (see below), whose sum is σ = 632213688960. Its totient is φ = 54189744480.

The previous prime is 203211542323. The next prime is 203211542399. The reversal of 203211542340 is 43245112302.

203211542340 is a `hidden beast` number, since 20 + 3 + 211 + 5 + 423 + 4 + 0 = 666.

It is a super-2 number, since 2×203211542340² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 188158296 + ... + 188159375.

It is an arithmetic number, because the mean of its divisors is an integer number (13171118520).

Almost surely, 2^203211542340 is an apocalyptic number.

203211542340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203211542340 is an abundant number, since it is smaller than the sum of its proper divisors (429002146620).

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

203211542340 is a wasteful number, since it uses less digits than its factorization.

203211542340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376317689 (or 376317681 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 203211542340 its reverse (43245112302), we get a palindrome (246456654642).

The spelling of 203211542340 in words is "two hundred three billion, two hundred eleven million, five hundred forty-two thousand, three hundred forty".