31424330112 has 128 divisors (see below), whose sum is σ = 95506598400. Its totient is φ = 8967905280.

The previous prime is 31424330107. The next prime is 31424330159. The reversal of 31424330112 is 21103342413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2463912 + ... + 2476632.

It is an arithmetic number, because the mean of its divisors is an integer number (746145300).

Almost surely, 2^31424330112 is an apocalyptic number.

31424330112 is a gapful number since it is divisible by the number (32) 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 31424330112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47753299200).

31424330112 is an abundant number, since it is smaller than the sum of its proper divisors (64082268288).

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

31424330112 is a wasteful number, since it uses less digits than its factorization.

31424330112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13664 (or 13652 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31424330112 its reverse (21103342413), we get a palindrome (52527672525).

The spelling of 31424330112 in words is "thirty-one billion, four hundred twenty-four million, three hundred thirty thousand, one hundred twelve".