31304420401400 has 96 divisors (see below), whose sum is σ = 77093541791280. Its totient is φ = 11780693760000.

The previous prime is 31304420401379. The next prime is 31304420401433. The reversal of 31304420401400 is 410402440313.

It is a self number, because there is not a number n which added to its sum of digits gives 31304420401400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7154975 + ... + 10667825.

Almost surely, 2^{31304420401400} 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 31304420401400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38546770895640).

31304420401400 is an abundant number, since it is smaller than the sum of its proper divisors (45789121389880).

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

31304420401400 is a wasteful number, since it uses less digits than its factorization.

31304420401400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515505 (or 3515496 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31304420401400 its reverse (410402440313), we get a palindrome (31714822841713).

The spelling of 31304420401400 in words is "thirty-one trillion, three hundred four billion, four hundred twenty million, four hundred one thousand, four hundred".