213204001234 has 12 divisors (see below), whose sum is σ = 372019226814. Its totient is φ = 91373143344.

The previous prime is 213204001217. The next prime is 213204001271. The reversal of 213204001234 is 432100402312.

It can be written as a sum of positive squares in only one way, i.e., 175102913209 + 38101088025 = 418453^2 + 195195^2 .

It is a super-2 number, since 2×213204001234² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1087775419 + ... + 1087775614.

Almost surely, 2^213204001234 is an apocalyptic number.

213204001234 is a deficient number, since it is larger than the sum of its proper divisors (158815225580).

213204001234 is a wasteful number, since it uses less digits than its factorization.

213204001234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175551049 (or 2175551042 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 213204001234 its reverse (432100402312), we get a palindrome (645304403546).

The spelling of 213204001234 in words is "two hundred thirteen billion, two hundred four million, one thousand, two hundred thirty-four".