31315030064 has 40 divisors (see below), whose sum is σ = 64421010720. Its totient is φ = 14695390208.

The previous prime is 31315030057. The next prime is 31315030079. The reversal of 31315030064 is 46003051313.

It is a super-2 number, since 2×31315030064² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62699 + ... + 257994.

It is an arithmetic number, because the mean of its divisors is an integer number (1610525268).

Almost surely, 2^31315030064 is an apocalyptic number.

31315030064 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31315030064 is an abundant number, since it is smaller than the sum of its proper divisors (33105980656).

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

31315030064 is a wasteful number, since it uses less digits than its factorization.

31315030064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321077 (or 321071 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 31315030064 its reverse (46003051313), we get a palindrome (77318081377).

The spelling of 31315030064 in words is "thirty-one billion, three hundred fifteen million, thirty thousand, sixty-four".