31443422113400 has 192 divisors, whose sum is σ = 80069880512160. Its totient is φ = 11388481280000.

The previous prime is 31443422113387. The next prime is 31443422113409. The reversal of 31443422113400 is 431122434413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31443422113409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 564881570 + ... + 564937230.

Almost surely, 2^{31443422113400} 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 31443422113400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40034940256080).

31443422113400 is an abundant number, since it is smaller than the sum of its proper divisors (48626458398760).

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

31443422113400 is a wasteful number, since it uses less digits than its factorization.

31443422113400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56706 (or 56697 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 31443422113400 its reverse (431122434413), we get a palindrome (31874544547813).

The spelling of 31443422113400 in words is "thirty-one trillion, four hundred forty-three billion, four hundred twenty-two million, one hundred thirteen thousand, four hundred".