213433334056 has 16 divisors (see below), whose sum is σ = 411003380340. Its totient is φ = 103832432640.

The previous prime is 213433334039. The next prime is 213433334057. The reversal of 213433334056 is 650433334312.

It can be written as a sum of positive squares in 2 ways, for example, as 206903077956 + 6530256100 = 454866^2 + 80810^2 .

It is a super-2 number, since 2×213433334056² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (213433334057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360528985 + ... + 360529576.

Almost surely, 2^213433334056 is an apocalyptic number.

It is an amenable number.

213433334056 is a deficient number, since it is larger than the sum of its proper divisors (197570046284).

213433334056 is a wasteful number, since it uses less digits than its factorization.

213433334056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721058604 (or 721058600 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 37.

Adding to 213433334056 its reverse (650433334312), we get a palindrome (863866668368).

The spelling of 213433334056 in words is "two hundred thirteen billion, four hundred thirty-three million, three hundred thirty-four thousand, fifty-six".