213433255251 has 12 divisors (see below), whose sum is σ = 310719981312. Its totient is φ = 141168451536.

The previous prime is 213433255229. The next prime is 213433255253. The reversal of 213433255251 is 152552334312.

213433255251 is a `hidden beast` number, since 2 + 13 + 43 + 3 + 2 + 552 + 51 = 666.

It is not a de Polignac number, because 213433255251 - 2³⁰ = 212359513427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213433255253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93364236 + ... + 93366521.

It is an arithmetic number, because the mean of its divisors is an integer number (25893331776).

Almost surely, 2^213433255251 is an apocalyptic number.

213433255251 is a deficient number, since it is larger than the sum of its proper divisors (97286726061).

213433255251 is a wasteful number, since it uses less digits than its factorization.

213433255251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186730890 (or 186730887 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

Adding to 213433255251 its reverse (152552334312), we get a palindrome (365985589563).

The spelling of 213433255251 in words is "two hundred thirteen billion, four hundred thirty-three million, two hundred fifty-five thousand, two hundred fifty-one".