213311234403 has 32 divisors (see below), whose sum is σ = 326980800000. Its totient is φ = 137275631136.

The previous prime is 213311234401. The next prime is 213311234417. The reversal of 213311234403 is 304432113312.

It is a happy number.

213311234403 is a `hidden beast` number, since 2 + 1 + 3 + 311 + 2 + 344 + 0 + 3 = 666.

It is not a de Polignac number, because 213311234403 - 2¹ = 213311234401 is a prime.

It is a super-2 number, since 2×213311234403² (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 not an unprimeable number, because it can be changed into a prime (213311234401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4202188 + ... + 4252646.

It is an arithmetic number, because the mean of its divisors is an integer number (10218150000).

Almost surely, 2^213311234403 is an apocalyptic number.

213311234403 is a deficient number, since it is larger than the sum of its proper divisors (113669565597).

213311234403 is a wasteful number, since it uses less digits than its factorization.

213311234403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55896 (or 55890 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 213311234403 its reverse (304432113312), we get a palindrome (517743347715).

The spelling of 213311234403 in words is "two hundred thirteen billion, three hundred eleven million, two hundred thirty-four thousand, four hundred three".