11203423434 has 48 divisors (see below), whose sum is σ = 28698433920. Its totient is φ = 3090598560.

The previous prime is 11203423423. The next prime is 11203423477. The reversal of 11203423434 is 43432430211.

11203423434 is a `hidden beast` number, since 1 + 1 + 203 + 4 + 23 + 434 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11203423398 and 11203423407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1529382 + ... + 1536689.

It is an arithmetic number, because the mean of its divisors is an integer number (597884040).

Almost surely, 2^11203423434 is an apocalyptic number.

11203423434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11203423434 is an abundant number, since it is smaller than the sum of its proper divisors (17495010486).

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

11203423434 is a wasteful number, since it uses less digits than its factorization.

11203423434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066115 (or 3066112 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 11203423434 its reverse (43432430211), we get a palindrome (54635853645).

The spelling of 11203423434 in words is "eleven billion, two hundred three million, four hundred twenty-three thousand, four hundred thirty-four".