31334103240 has 128 divisors (see below), whose sum is σ = 102817382400. Its totient is φ = 7576190720.

The previous prime is 31334103181. The next prime is 31334103247. The reversal of 31334103240 is 4230143313.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31334103240.

It is not an unprimeable number, because it can be changed into a prime (31334103247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474571 + ... + 536549.

It is an arithmetic number, because the mean of its divisors is an integer number (803260800).

Almost surely, 2^31334103240 is an apocalyptic number.

31334103240 is a gapful number since it is divisible by the number (30) 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 31334103240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51408691200).

31334103240 is an abundant number, since it is smaller than the sum of its proper divisors (71483279160).

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

31334103240 is a wasteful number, since it uses less digits than its factorization.

31334103240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62387 (or 62383 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31334103240 its reverse (4230143313), we get a palindrome (35564246553).

The spelling of 31334103240 in words is "thirty-one billion, three hundred thirty-four million, one hundred three thousand, two hundred forty".