312344103221400 has 48 divisors (see below), whose sum is σ = 968266719988200. Its totient is φ = 83291760858880.

The previous prime is 312344103221387. The next prime is 312344103221407. The reversal of 312344103221400 is 4122301443213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312344103221407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260286752085 + ... + 260286753284.

Almost surely, 2^{312344103221400} is an apocalyptic number.

312344103221400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312344103221400 is an abundant number, since it is smaller than the sum of its proper divisors (655922616766800).

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

312344103221400 is a wasteful number, since it uses less digits than its factorization.

312344103221400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520573505388 (or 520573505379 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 312344103221400 its reverse (4122301443213), we get a palindrome (316466404664613).

The spelling of 312344103221400 in words is "three hundred twelve trillion, three hundred forty-four billion, one hundred three million, two hundred twenty-one thousand, four hundred".