404213232312 has 64 divisors (see below), whose sum is σ = 1181910048000. Its totient is φ = 127646282592.

The previous prime is 404213232301. The next prime is 404213232317. The reversal of 404213232312 is 213232312404.

404213232312 is a `hidden beast` number, since 4 + 0 + 4 + 21 + 323 + 2 + 312 = 666.

It is a super-2 number, since 2×404213232312² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404213232317) 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, 49242148 + ... + 49250355.

It is an arithmetic number, because the mean of its divisors is an integer number (18467344500).

Almost surely, 2^404213232312 is an apocalyptic number.

It is an amenable number.

404213232312 is an abundant number, since it is smaller than the sum of its proper divisors (777696815688).

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

404213232312 is a wasteful number, since it uses less digits than its factorization.

404213232312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98492537 (or 98492527 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 404213232312 its reverse (213232312404), we get a palindrome (617445544716).

The spelling of 404213232312 in words is "four hundred four billion, two hundred thirteen million, two hundred thirty-two thousand, three hundred twelve".