203311142 has 8 divisors (see below), whose sum is σ = 305629632. Its totient is φ = 101434600.

The previous prime is 203311111. The next prime is 203311193. The reversal of 203311142 is 241113302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×203311142² = 82670840922688328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203311142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109334 + ... + 111177.

It is an arithmetic number, because the mean of its divisors is an integer number (38203704).

Almost surely, 2^203311142 is an apocalyptic number.

203311142 is a deficient number, since it is larger than the sum of its proper divisors (102318490).

203311142 is a wasteful number, since it uses less digits than its factorization.

203311142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220974.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 203311142 is about 14258.7216117014. The cubic root of 203311142 is about 588.0131790126.

Adding to 203311142 its reverse (241113302), we get a palindrome (444424444).

The spelling of 203311142 in words is "two hundred three million, three hundred eleven thousand, one hundred forty-two".