203111302231144 has 32 divisors (see below), whose sum is σ = 384296733720000. Its totient is φ = 100632607543552.

The previous prime is 203111302231141. The next prime is 203111302231381. The reversal of 203111302231144 is 441132203111302.

It is a super-2 number, since 2×203111302231144² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203111302231141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23400244 + ... + 30883555.

It is an arithmetic number, because the mean of its divisors is an integer number (12009272928750).

Almost surely, 2^{203111302231144} is an apocalyptic number.

It is an amenable number.

203111302231144 is a deficient number, since it is larger than the sum of its proper divisors (181185431488856).

203111302231144 is a wasteful number, since it uses less digits than its factorization.

203111302231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54288057 (or 54288053 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 203111302231144 its reverse (441132203111302), we get a palindrome (644243505342446).

The spelling of 203111302231144 in words is "two hundred three trillion, one hundred eleven billion, three hundred two million, two hundred thirty-one thousand, one hundred forty-four".