31615141064 has 32 divisors (see below), whose sum is σ = 65563632120. Its totient is φ = 14197234176.

The previous prime is 31615141049. The next prime is 31615141081. The reversal of 31615141064 is 46014151613.

It can be written as a sum of positive squares in 4 ways, for example, as 20514832900 + 11100308164 = 143230^2 + 105358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31615141064.

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, 4104149 + ... + 4111844.

Almost surely, 2^31615141064 is an apocalyptic number.

It is an amenable number.

31615141064 is an abundant number, since it is smaller than the sum of its proper divisors (33948491056).

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

31615141064 is a wasteful number, since it uses less digits than its factorization.

31615141064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8216049 (or 8216045 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 31615141064 its reverse (46014151613), we get a palindrome (77629292677).

The spelling of 31615141064 in words is "thirty-one billion, six hundred fifteen million, one hundred forty-one thousand, sixty-four".