31304312160 has 192 divisors, whose sum is σ = 111282958080. Its totient is φ = 7327201280.

The previous prime is 31304312129. The next prime is 31304312161. The reversal of 31304312160 is 6121340313.

It is a happy number.

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 31304312160.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304312161) 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, 50899 + ... + 255341.

It is an arithmetic number, because the mean of its divisors is an integer number (579598740).

Almost surely, 2^31304312160 is an apocalyptic number.

31304312160 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 31304312160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55641479040).

31304312160 is an abundant number, since it is smaller than the sum of its proper divisors (79978645920).

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

31304312160 is a wasteful number, since it uses less digits than its factorization.

31304312160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204501 (or 204493 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31304312160 its reverse (6121340313), we get a palindrome (37425652473).

The spelling of 31304312160 in words is "thirty-one billion, three hundred four million, three hundred twelve thousand, one hundred sixty".