31316064 has 96 divisors (see below), whose sum is σ = 92461824. Its totient is φ = 9208320.

The previous prime is 31316039. The next prime is 31316069. The reversal of 31316064 is 46061313.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31316069) by changing a digit.

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, 28159 + ... + 29249.

It is an arithmetic number, because the mean of its divisors is an integer number (963144).

Almost surely, 2^31316064 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 31316064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46230912).

31316064 is an abundant number, since it is smaller than the sum of its proper divisors (61145760).

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

31316064 is a wasteful number, since it uses less digits than its factorization.

31316064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1132 counting only the distinct ones).

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

The square root of 31316064 is about 5596.0757678931. The cubic root of 31316064 is about 315.2020673763.

Adding to 31316064 its reverse (46061313), we get a palindrome (77377377).

The spelling of 31316064 in words is "thirty-one million, three hundred sixteen thousand, sixty-four".