312218071452 has 180 divisors, whose sum is σ = 963867366000. Its totient is φ = 86326974720.

The previous prime is 312218071447. The next prime is 312218071507. The reversal of 312218071452 is 254170812213.

312218071452 is a `hidden beast` number, since 3 + 1 + 22 + 180 + 7 + 1 + 452 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2107924 + ... + 2251172.

It is an arithmetic number, because the mean of its divisors is an integer number (5354818700).

Almost surely, 2^312218071452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312218071452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481933683000).

312218071452 is an abundant number, since it is smaller than the sum of its proper divisors (651649294548).

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

312218071452 is a wasteful number, since it uses less digits than its factorization.

312218071452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143334 (or 143292 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

Adding to 312218071452 its reverse (254170812213), we get a palindrome (566388883665).

The spelling of 312218071452 in words is "three hundred twelve billion, two hundred eighteen million, seventy-one thousand, four hundred fifty-two".