203402420111 has 8 divisors (see below), whose sum is σ = 221898980304. Its totient is φ = 184906765120.

The previous prime is 203402420107. The next prime is 203402420119. The reversal of 203402420111 is 111024204302.

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

It is not a de Polignac number, because 203402420111 - 2² = 203402420107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203402420119) 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, 295955 + ... + 703131.

It is an arithmetic number, because the mean of its divisors is an integer number (27737372538).

Almost surely, 2^203402420111 is an apocalyptic number.

203402420111 is a deficient number, since it is larger than the sum of its proper divisors (18496560193).

203402420111 is a wasteful number, since it uses less digits than its factorization.

203402420111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452601.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 203402420111 its reverse (111024204302), we get a palindrome (314426624413).

The spelling of 203402420111 in words is "two hundred three billion, four hundred two million, four hundred twenty thousand, one hundred eleven".