312003240321400 has 96 divisors (see below), whose sum is σ = 742285950658560. Its totient is φ = 121897548743040.

The previous prime is 312003240321359. The next prime is 312003240321401. The reversal of 312003240321400 is 4123042300213.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312003240321401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1081761609 + ... + 1082049991.

It is an arithmetic number, because the mean of its divisors is an integer number (7732145319360).

Almost surely, 2^{312003240321400} is an apocalyptic number.

It is an amenable number.

312003240321400 is an abundant number, since it is smaller than the sum of its proper divisors (430282710337160).

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

312003240321400 is a wasteful number, since it uses less digits than its factorization.

312003240321400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414245 (or 414236 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 312003240321400 its reverse (4123042300213), we get a palindrome (316126282621613).

The spelling of 312003240321400 in words is "three hundred twelve trillion, three billion, two hundred forty million, three hundred twenty-one thousand, four hundred".