213230112312 has 64 divisors (see below), whose sum is σ = 609355353600. Its totient is φ = 60910243200.

The previous prime is 213230112287. The next prime is 213230112313. The reversal of 213230112312 is 213211032312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213230112313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695437 + ... + 953987.

It is an arithmetic number, because the mean of its divisors is an integer number (9521177400).

Almost surely, 2^213230112312 is an apocalyptic number.

It is an amenable number.

213230112312 is an abundant number, since it is smaller than the sum of its proper divisors (396125241288).

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

213230112312 is a wasteful number, since it uses less digits than its factorization.

213230112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263476 (or 263472 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213230112312 its reverse (213211032312), we get a palindrome (426441144624).

The spelling of 213230112312 in words is "two hundred thirteen billion, two hundred thirty million, one hundred twelve thousand, three hundred twelve".