312255322500 has 180 divisors, whose sum is σ = 1000749045296. Its totient is φ = 75698040000.

The previous prime is 312255322469. The next prime is 312255322513. The reversal of 312255322500 is 5223552213.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 735459 + ... + 1079541.

Almost surely, 2^312255322500 is an apocalyptic number.

312255322500 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312255322500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500374522648).

312255322500 is an abundant number, since it is smaller than the sum of its proper divisors (688493722796).

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

312255322500 is a wasteful number, since it uses less digits than its factorization.

312255322500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344132 (or 344104 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 312255322500 its reverse (5223552213), we get a palindrome (317478874713).

The spelling of 312255322500 in words is "three hundred twelve billion, two hundred fifty-five million, three hundred twenty-two thousand, five hundred".